Reference Specimens
Mexico

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Photos by Fabre Minerals. Under Creative Commons license

This page provides a selection of the specimens that have passed through the Fabre Minerals website and, due to their quality,
rarity, or significance as specimens from interesting locations, have been preserved as reference specimens in #MVM


SAN LUIS POTOSI / Danburite with Quartz (variety amethyst)

At Tucson 2005, for the first time some Quartz Amethyst associated with classical Danburite from Charcas, Mexico, appeared. Specimens of high quality in which the color of the Amethyst is more intense showed up in Ste. Marie this year.
The samples are very original and esthetic and we must add that some of them are on groups and not single crystals as it usually happens.

Danburite with Quartz (variety amethyst)
Danburite with Quartz (variety amethyst).
 

ER96I1: The crystals of Danburite are completely clear and form a contact visible both for the form of wedge on the termination and the fine suture all along the prism. The group is densely covered by amethyst crystals of excellent color.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 28 in number 2006/2.
Mina San Bartolo, Charcas, San Luis Potosí  Mexico (2005-2006)

Specimen size: 4 × 2.8 × 3 cm = 1.57” × 1.10” × 1.18”

Main crystal size: 1.5 × 0.6 cm = 0.59” × 0.24”

Danburite with Quartz (variety amethyst)
 

EL30H7: The sample is very esthetic, formed by prismatic crystals of Danburite, one of them clearly dominant, with very sharp faces and edges and clear terminations. On the base of the specimen there are groups of amethyst Quartz of a nice color, contrasting with the white Danburite.
This sample has been reviewed, photographed and published as news from Ste. Marie 2006 by the magazine ‘Le Règne Minéral’ on page 47, number 70.
Mina San Bartolo, Charcas, San Luis Potosí  Mexico (2005-2006)

Specimen size: 7 × 6.5 × 4.5 cm = 2.76” × 2.56” × 1.77”

Main crystal size: 8.3 × 2.2 cm = 3.27” × 0.87”

Danburite with Quartz (variety amethyst). Danburite with Quartz (variety amethyst).

SINALOA

Smithsonite
Smithsonite.
 

TB16G9: We specially love the vivid green color of his fine and esthetic botryoidal growth, really formed of crystals with completely rounded faces and edges.
Mina Santa Anita, Choix, Sinaloa  Mexico (2005)

Specimen size: 5.5 × 5 × 2.5 cm = 2.17” × 1.97” × 0.98”


SONORA / Milpillas Mine (Olivenite)

Olivenite

Fluorescent light (daylight)
 

TJA28AN6: Very sharp crystals of Olivenite on matrix, flattened, some of them doubly terminated, with very well defined faces and edges and perfect terminations, with bright luster and a very deep olive-green color. As on so many other occasions in Milpillas, one of the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 1.7 × 1.1 × 0.9 cm = 0.67” × 0.43” × 0.35”

Main crystal size: 1 × 0.2 cm = 0.39” × 0.08”

Olivenite.
Olivenite
Olivenite. Front
Front
Olivenite. Rear
Rear
 

TA50AL2: A novelty at Tucson 2020. Two outstanding Olivenite crystals, one of them clearly dominant, flattened, with very well defined faces and edges and perfect terminations, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 1.8 × 0.9 × 0.6 cm = 0.71” × 0.35” × 0.24”

Olivenite
 

TT49AL2: A novelty at Tucson 2020. Matrix group of outstanding Olivenite crystals, one of them clearly dominant, flattened, with very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
The sample has been noted and photographed in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 608 in the volume 52, number 5, September-October 2021 and in the Russian magazine ‘Mineral Observer’ on page 58 in the volume 25, number 2

Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 1.9 × 1.4 × 1.3 cm = 0.75” × 0.55” × 0.51”

Main crystal size: 1.9 × 0.5 cm = 0.75” × 0.20”

Olivenite.
Olivenite
Olivenite.
 

TX99AL2: A novelty at Tucson 2020. Two outstanding Olivenite crystals, flattened, with sharp faces and edges and perfect terminal faces, lustrous and very deep olive green. As on so many other occasions in Milpillas, the best for the species. As on so many other occasions in Milpillas, among the best of the species.
The specimen has been reviewed, photographed and published as a novelty from Tucson 2020 in the Russian magazine ‘Mineral Observer’ on page 58 in the volume 25, number 2

Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 1.9 × 1.8 × 0.9 cm = 0.75” × 0.71” × 0.35”

Main crystal size: 1.9 × 0.7 cm = 0.75” × 0.28”

Olivenite
 

TV99AL2: A novelty at Tucson 2020. Group, on matrix, of highly profiled, flattened Olivenite crystals, some of them doubly terminated, with very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 2 × 1.6 × 1.2 cm = 0.79” × 0.63” × 0.47”

Main crystal size: 1.8 × 0.5 cm = 0.71” × 0.20”

Olivenite. Front
Front
Olivenite. Side
Side
Olivenite
Olivenite.
 

TD88AM3: A novelty at Tucson 2020. Group of Olivenite crystals on matrix, one of them clearly dominant and very aerial and sharp, flattened, with very well defined faces and edges and perfect terminations. With good luster and a very deep olive-green color. As on so many other occasions in Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 2.2 × 1.4 × 0.8 cm = 0.87” × 0.55” × 0.31”

Main crystal size: 1.1 × 0.3 cm = 0.43” × 0.12”

Olivenite
 

TC47AM3: A novelty at Tucson 2020. Group of Olivenite crystals on matrix, one of them clearly dominant and very aerial and sharp, flattened, with very well defined faces and edges and perfect terminations. With good luster and a very deep olive-green color. As on so many other occasions in Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 2.2 × 1.9 × 1.7 cm = 0.87” × 0.75” × 0.67”

Main crystal size: 1.2 × 0.4 cm = 0.47” × 0.16”

Olivenite.
Olivenite
Olivenite. Photo Joaquim Callén
Photo Joaquim Callén
 

TF49AM0: A novelty at Tucson 2020. Very aerial group of sharp, flat, doubly terminated Olivenite crystals on matrix. With very well defined faces and edges and perfect terminations, lustrous and very deep olive green. As with so many other things from Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 2.5 × 1.9 × 0.6 cm = 0.98” × 0.75” × 0.24”

Main crystal size: 1 × 0.2 cm = 0.39” × 0.08”

Olivenite with Quartz
 

TR92AL2: A novelty at Tucson 2020. Very aerial group, on matrix, of highly profiled, flattened, doubly terminated Olivenite crystals, with sharp faces and edges and perfect terminal faces, lustrous and with a very deep olive-green color. As on so many other occasions in Milpillas, among the best of the species.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 43 of the 2020/02 edition.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 3.3 × 2.6 × 2 cm = 1.30” × 1.02” × 0.79”

Main crystal size: 1.9 × 0.3 cm = 0.75” × 0.12”

Olivenite with Quartz. Front
Front
Olivenite with Quartz. Side
Side
Olivenite with Quartz.
Olivenite
Olivenite. Olivenite.

Fluorescent light (daylight)
 

TXX88AP9: Very sharp Olivenite crystals on matrix, flattened, some of them doubly terminated, with the faces and edges well defined, translucent, shiny and of a very deep olive-green color.
As on so many other occasions in Milpillas, the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 3.7 × 2.7 × 1.9 cm = 1.46” × 1.06” × 0.75”

Main crystal size: 1.1 × 0.2 cm = 0.43” × 0.08”

Olivenite
 

TY90AM0: A novelty at Tucson 2020. Isolated crystals of Olivenite on matrix, flat and most of them doubly terminated. With very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green. As with so many things from Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 4.5 × 4.2 × 3.2 cm = 1.77” × 1.65” × 1.26”

Main crystal size: 1.2 × 0.2 cm = 0.47” × 0.08”

Olivenite. Front / Photo: Joaquim Callén
Front / Photo: Joaquim Callén
Olivenite. Detail / Photo: Joaquim Callén
Detail / Photo: Joaquim Callén
Olivenite. Detail / Photo: Joaquim Callén
Detail / Photo: Joaquim Callén
Olivenite with Quartz
Olivenite with Quartz. Front
Front
Olivenite with Quartz. Side
Side
Olivenite with Quartz.
 

TT51AL2: A novelty at Tucson 2020. Matrix group of acicular Olivenite crystals with very well defined faces and edges, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 4.7 × 3 × 1.9 cm = 1.85” × 1.18” × 0.75”

Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”

Olivenite

Fluorescent light (daylight)
 

TT96AL9: A novelty at Tucson 2020. Druse of elongated Olivenite crystals on matrix with sharp faces and edges and good terminal faces, with good luster and a very deep olive green color. As with so many other finds fromn Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 7.2 × 5.5 × 1.6 cm = 2.83” × 2.17” × 0.63”

Main crystal size: 0.6 × 0.1 cm = 0.24” × 0.04”

Olivenite. Olivenite.

SONORA / Milpillas Mine (Azurite)

Azurite with Malachite
Azurite with Malachite.
 

TT6Y4: Group of sharp doubly terminated crystals, one of them clearly dominant. They have the extraordinary deep blue color (“electric blue”) typical of the best samples from Milpillas and are slightly coated by Malachite. Nice miniature.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2011-2012)

Specimen size: 2 × 1.5 × 0.7 cm = 0.79” × 0.59” × 0.28”

Main crystal size: 2 × 1.2 cm = 0.79” × 0.47”

Azurite
 

TA68AJ2: A novelty at Tucson 2019. Very sharp Azurite crystals, one of them clearly dominant, with a morphology that is unusual until now at Milpillas. The crystals, on matrix, are extremely flattened, between translucent and transparent, extraordinarily bright and have a very deep color with vivid reflections.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2018)

Specimen size: 2.4 × 2 × 1.1 cm = 0.94” × 0.79” × 0.43”

Main crystal size: 1.6 × 1.1 cm = 0.63” × 0.43”

Azurite. Front
Front
Azurite. Light behind
Light behind
Azurite
Azurite.
 

TJ51AD0: Single Azurite crystal on matrix. It is doubly terminated, very rich in faces, very bright, and with the extraordinary deep blue color (electric blue) that has made the Azurites from this locality famous.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2016, page 80
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (04/2015)

Specimen size: 3.2 × 2.7 × 1.5 cm = 1.26” × 1.06” × 0.59”

Main crystal size: 2.8 × 1.3 cm = 1.10” × 0.51”

Azurite
 

TT69AJ2: A novelty at Tucson 2019. Very sharp Azurite crystals with a morphology that is unusual until now at Milpillas. The crystals, on matrix, are very flattened, between translucent and transparent, extraordinarily bright and have a very deep color, with vivid reflections.
This specimen was published on the Mineralogical Record´s web page, in the ‘What's New’ section, report 52, April 13, 2019 edition, page 5
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2018)

Specimen size: 3.3 × 2.8 × 1.9 cm = 1.30” × 1.10” × 0.75”

Main crystal size: 1.8 × 1 cm = 0.71” × 0.39”

Azurite. Front
Front
Azurite. Light behind
Light behind
Azurite with Malachite
Azurite with Malachite. Photo: Joaquim Callén
Photo: Joaquim Callén
Azurite with Malachite  

HM190NJ: Floater growth of sharp Azurite crystals with very well defined faces and edges, translucent and with the extraordinary deep blue color (“electric blue”) typical of the best specimens from Milpillas. With vivid internal reflections and transparent parts under intense light and with coatings of acicular Malachite crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012)

Specimen size: 3.6 × 2.8 × 1.7 cm = 1.42” × 1.10” × 0.67”

Azurite with Malachite
 

TB69AF1: Flattened Azurite crystals that are very aerial on the matrix, with very well defined faces and edges and having the brilliant luster and famous rich blue color (“electric blue”) typical of the best samples from Milpillas. With small fibrous Malachite coatings.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 3.7 × 3.3 × 2.1 cm = 1.46” × 1.30” × 0.83”

Main crystal size: 2.3 × 1 cm = 0.91” × 0.39”

Azurite with Malachite. Front
Front
Azurite with Malachite. Side
Side
Azurite with Malachite.
Azurite
Azurite. Front
Front
Azurite. Top
Top
 

EB63Q8: A novelty at Ste. Marie 2010. Two individualized sharp doubly terminated crystals on matrix of very well defined faces and edges and having the very intense luster from Milpillas. Their incredible blue color (“electric blue”) is typical of the samples of this very special find.
This specimen was photographed and published as a novelty at the 2010 Ste. Marie Show in the magazine ‘Le Règne Minéral’ number 94, page 57, for the magazine ‘Mineralien Welt’ page 11 of number 5/2010 and for the magazine ‘Mineral Up’ on page 29 in number 2010/2 as well as in the special "Milpillas" of the "Lapis" magazine number 07-08/2017, page 4
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (05/2010)

Specimen size: 3.8 × 3.4 × 2.4 cm = 1.50” × 1.34” × 0.94”

Main crystal size: 3 × 1.3 cm = 1.18” × 0.51”

Azurite with Malachite and Baryte

Fluorescent light (daylight)
 

TP94AK6: Very aerial group of complex crystals, some of them doubly terminated, with well defined faces and edges, translucent and with the extraordinary deep blue color (“electric blue”) typical of the best specimens from Milpillas, with bright reflections and transparency under intense light. On matrix, with Malachite and small Baryte crystals.
Milpillas Mine, level 1140, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 4.2 × 2.6 × 2.7 cm = 1.65” × 1.02” × 1.06”

Main crystal size: 2 × 2 cm = 0.79” × 0.79”

Azurite with Malachite and Baryte. Front
Front
Azurite with Malachite and Baryte. Side
Side
Azurite
Azurite. Azurite.

Fluorescent light (daylight)
 

TB47AL5: Floater group of highly profiled, flattened crystals with very well defined faces and edges, with an equidimensional habit, bright, and very deep in color with intense and vivid translucency on the edges. As usually happens in the Milpillas mine, of extraordinary quality, especially due to the sharpness of the crystals.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2020)

Specimen size: 4,6 × 3.4 × 1 cm = 1.57” × 1.34” × 0.39”

Main crystal size: 3.4 × 2.3 cm = 1.34” × 0.91”

Azurite with Malachite

Fluorescent light (daylight)
Azurite with Malachite
 

TC2480TEP: Group of thick lenticular Azurite crystals, with very well defined faces and edges, with the intense luster of Milpillas and the famous deep blue color (“electric blue”) of the best specimens from this locality. It sits on matrix with small coatings of fibrous Malachite. The Milpillas mine was closed in June 2020
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 4.6 × 3.8 × 2.3 cm = 1.81” × 1.50” × 0.91”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”

Azurite with Malachite. Front / Photo: Joaquim Callén
Front / Photo: Joaquim Callén
Azurite with Malachite. Rear / Photo: Joaquim Callén
Rear / Photo: Joaquim Callén
Azurite with Malachite
Azurite with Malachite. Front
Front
Azurite with Malachite. Rear
Rear
Azurite with Malachite.
 

TR98V4: Parallel aggregates of Azurite crystals with very well defined faces and edges, very bright and with a very deep color. They are on a base of fibrous crystals of Malachite.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (05/2010)

Specimen size: 5.3 × 4.4 × 2.7 cm = 2.09” × 1.73” × 1.06”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”

Azurite with Malaquite
 

TZ64Z3: Very aerial aggregate of complex crystals with slightly curved faces, very bright, translucent and with a vivid, deep and uniform blue color. The sample is especially esthetic because it is crowning a matrix very rich in small acicular Malachite crystals.
This specimen has been reviewed and published in the special "Milpillas" of the magazine ‘Lapis’ number 07-08/2017, page 23
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2013)

Specimen size: 5.8 × 4.4 × 2.4 cm = 2.28” × 1.73” × 0.94”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”

Azurite with Malaquite. Front
Front
Azurite with Malaquite. Rear
Rear
Azurite with Malaquite.
Azurite with Malachite
Azurite with Malachite. Azurite with Malachite.
 

EH66Q8: A novelty at Ste. Marie 2010. Very aerial and esthetic group of very well defined faces and edges and having the very intense luster from Milpillas. Their incredible blue color (“electric blue”) is typical of the samples of this very special find. With Malachite growths and on matrix.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (05/2010)

Specimen size: 6 × 4.2 × 3.3 cm = 2.36” × 1.65” × 1.30”

Main crystal size: 3.4 × 2.4 cm = 1.34” × 0.94”

Azurite with Malachite

Fluorescent light (daylight)
 

TJA71AN4: Aggregate, on matrix, of thick lenticular Azurite crystals with very well defined faces and edges, with the very intense luster of Milpillas specimens, and the famous deep blue color (“electric blue”) of the best specimens from the locality. With small coatings of fibrous Malachite. The Milpillas mine closed in June 2020.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 6.2 × 4 × 2 cm = 2.44” × 1.57” × 0.79”

Main crystal size: 2 × 1.2 cm = 0.79” × 0.47”

Azurite with Malachite. Front / Photo: Joaquim Callén
Front / Photo: Joaquim Callén
Azurite with Malachite. Detail
Detail
Azurite
Azurite.
Azurite. Azurite.
 

TX66S0: Individual crystals of simple and very well defined forms. Two of the crystals are clearly dominant, bright and deep blue colored, with transparent edges. A very beautiful sample, with an uncommon presentation for the locality, where crystals usually are grouped.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 6.3 × 6 × 3.2 cm = 2.48” × 2.36” × 1.26”

Main crystal size: 2.2 × 1.4 cm = 0.87” × 0.55”

Azurite with Malachite
 

TB14Z2: Very aerial group of Azurite crystals on matrix, with aggregates of acicular Malachite crystals. The crystals, one of them clearly dominant, are translucent and have the vivid and deep blue color (“electric blue”) typical of the best samples from Milpillas.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2013)

Specimen size: 6.7 × 4.9 × 1.7 cm = 2.64” × 1.93” × 0.67”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”

Azurite with Malachite. Azurite with Malachite.
Azurite with Dickite
Azurite with Dickite. Azurite with Dickite.
 

TQ46AB3: A novelty at Tucson 2015. Aggregate of very sharp Azurite crystals with a thick tabular shape called “chewing gum” due their particular profile. The crystals are transparent, very bright and have the extraordinary deep blue color (“electric blue”) typical of the best samples from Milpillas. Azurite is implanted on white Dickite coating a rocky matrix.
This specimen has been photographed and published as a novelty at the 2015 Tucson Show in the magazine "Lapis" number 03/2015, page 28 and in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 552 in the volume 52, number 5, September-October 2021
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2014)

Specimen size: 7 × 4.5 × 1.4 cm = 2.76” × 1.77” × 0.55”

Main crystal size: 1.2 × 0.4 cm = 0.47” × 0.16”

Azurite
 

TE0W4: Thick tabular crystals of azurite on matrix. They are much more isolated than usual, are very bright and have the vivid blue color (electric blue) that has made the Azurites from this locality famous.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (10/2011)

Specimen size: 7.4 × 5 × 3.4 cm = 2.91” × 1.97” × 1.34”

Main crystal size: 1.4 × 1.4 cm = 0.55” × 0.55”

Azurite. Front
Front
Azurite. Top
Top
Azurite.
Azurite with Malachite
Azurite with Malachite. Front
Front
Azurite with Malachite. Side
Side
Azurite with Malachite. Azurite with Malachite.

Fluorescent light (daylight)
 

TG27AF8: Elongated, flattened and doubly terminated Azurite crystals, very rich in faces, extraordinarily bright with intense reflections and transparences under a bright light, and with the deep and vivid color (“electric blue”) typical of the best samples from Milpillas. The sample is of the best possible quality, both for the species and for the locality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 9.2 × 6.6 × 4.1 cm = 3.62” × 2.60” × 1.61”

Main crystal size: 3.2 × 1.2 cm = 1.26” × 0.47”

Azurite with Malachite

Fluorescent light (daylight)
 

TT27AI4: Aggregate of very sharp Azurite crystals, one of them clearly dominant. These crystals, between translucent and transparent, are very bright and have the extraordinarily deep and vivid blue color (“electric blue”) typical of the best samples from Milpillas and they are implanted on a rough Malachite band coating the matrix. The esthetic blue-green contrast between Azurite and Malachite is not too common at Milpillas.

Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 9.9 × 6.7 × 4.2 cm = 3.90” × 2.64” × 1.65”

Main crystal size: 2.7 × 1.3 cm = 1.06” × 0.51”

Azurite with Malachite. Azurite with Malachite.

SONORA / Milpillas Mine (Malachite)

Malachite pseudo Azurite with Plancheite
Malachite pseudo Azurite with Plancheite.
 

TE88N0: A novelty for Tucson 2009. The Malachite has replaced very well defined crystals of Azurite, some of them doubly terminated. On the piece the dark green color of the Malachite contrasts with the botryoidal concretions of Plancheite. This association is very rare at Milpillas and only a few specimens arrived to the market.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2008)

Specimen size: 3.4 × 2.3 × 2.2 cm = 1.34” × 0.91” × 0.87”

Main crystal size: 1.8 × 0.7 cm = 0.71” × 0.28”

Malachite after Azurite
 

TC56X1: Aerial sample of Malachite pseudomorphous after Azurite. They have a very deep color, an excellent luster for the species and the biggest crystal of the former Azurite is doubly terminated.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2009)

Specimen size: 3.4 × 3.3 × 1.9 cm = 1.34” × 1.30” × 0.75”

Main crystal size: 2.3 × 2.2 cm = 0.91” × 0.87”

Malachite after Azurite. Front
Front
Malachite after Azurite. Top
Top
Malachite after Azurite with Goethite
Malachite after Azurite with Goethite. Front
Front
Malachite after Azurite with Goethite. Side
Side
 

TQ69AJ2: Parallel growth of two aerial, flattened Malachites after Azurite crystals with very well defined faces and edges and on a botryoidal Goethite matrix.
This specimen was published on the Mineralogical Record´s web page, in the ‘What's New’ section, report 52, April 13, 2019 edition, page 6
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09/2019)

Specimen size: 4.4 × 4 × 4.2 cm = 1.73” × 1.57” × 1.65”

Main crystal size: 3.4 × 2.5 cm = 1.34” × 0.98”

Malachite pseudo Azurite with Plancheite
 

TZ98N0: A novelty for Tucson 2009. The Malachite has replaced very well defined crystals of Azurite, some of them doubly terminated. On the piece the dark green color of the Malachite contrasts with the botryoidal concretions of Plancheite. This association is very rare at Milpillas and only a few specimens arrived to the market.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2008)

Specimen size: 5.2 × 3.1 × 2.4 cm = 2.05” × 1.22” × 0.94”

Main crystal size: 1.9 × 0.7 cm = 0.75” × 0.28”

Malachite pseudo Azurite with Plancheite.
Malachite pseudo Azurite with Plancheite.
Malachite pseudo Azurite with Quartz and Chrysocolla
Malachite pseudo Azurite with Quartz and Chrysocolla.
Malachite pseudo Azurite with Quartz and Chrysocolla.
 

TV48N0: A novelty for Tucson 2009. The Malachite has replaced very well defined crystals of Azurite, some of them doubly terminated. The matrix is a thin layer of very bright crystals of Chrysocolla. This association is very rare at Milpillas and only a very few specimens arrived to the market.
The specimen has been published in the magazine ‘extraLAPIS’ on page 83, number 45, "Kupfer Mineralien" and in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 596 in the volume 52, number 5, September-October 2021
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2008)

Specimen size: 5.5 × 3.4 × 1.8 cm = 2.17” × 1.34” × 0.71”

Main crystal size: 1.2 × 0.5 cm = 0.47” × 0.20”

Malachite after Azurite

Fluorescent light (daylight)
 

MLX47AP5: Very aerial and aesthetic group of sharp Malachite pseudomorphs after Azurite crystals, on matrix.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 5.7 × 4.3 × 4 cm = 2.24” × 1.69” × 1.57”

Main crystal size: 2.7 × 1.6 cm = 1.06” × 0.63”

Malachite after Azurite. Front
Front
Malachite after Azurite. Side
Side
Malachite after Azurite
Malachite after Azurite. Malachite after Azurite.
 

TB47AA2: Very aerial group of Malachite pseudomorphous after Azurite crystals, with slightly rounded faces and edges, a very deep green color and a silky luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 6.7 × 4.3 × 2.2 cm = 2.64” × 1.69” × 0.87”

Main crystal size: 3 × 1.4 cm = 1.18” × 0.55”

Malachite after Azurite with Plancheite
 

TF74AB3: Aggregate of thick Malachite crystals pseudomorphous after Azurite, better defined than usual, whose faces have a fibrous aspect and silky luster and small blue Planchéite aggregates.
Milpillas Mine, level 1140, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012)

Specimen size: 8 × 7.2 × 3.2 cm = 3.15” × 2.83” × 1.26”

Main crystal size: 5.4 × 2 cm = 2.13” × 0.79”

Malachite after Azurite with Plancheite. Malachite after Azurite with Plancheite.
Malachite after Azurite
Malachite after Azurite. Front
Front
Malachite after Azurite. Side
Side
Malachite after Azurite.
 

TN78AB3: Aggregate of thick Malachite crystals pseudomorphous after Azurite whose faces have a fibrous aspect and silky luster. They are very well defined and sharp, especially considering they are pseudomorphs.
Milpillas Mine, level 1140, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012)

Specimen size: 8.6 × 5.4 × 3.7 cm = 3.39” × 2.13” × 1.46”

Main crystal size: 2.8 × 2 cm = 1.10” × 0.79”

Malachite after Azurite
 

TR59AH6: Group of Malachite crystals pseudomorphous after Azurite, with very well defined faces and edges, some of them doubly terminated and with a velvety aspect on the surface of their faces.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2014)

Specimen size: 8.6 × 7 × 3.6 cm = 3.39” × 2.76” × 1.42”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”

Malachite after Azurite. Malachite after Azurite.
Malachite after Azurite on Goethite
Malachite after Azurite on Goethite. Malachite after Azurite on Goethite.
 

TN22AB2: A novelty at Tucson 2015. Flattened crystals pseudomorphous after Azurite, coated by fibrous aggregates of the same Malachite, and implanted on an unusual matrix: a very bright botryoidal Goethite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 9.3 × 7.5 × 7.7 cm = 3.66” × 2.95” × 3.03”

Main crystal size: 2.5 × 1.7 cm = 0.98” × 0.67”

Malachite after Azurite with Baryte
 

TR62AB3: A novelty at Tucson 2015. Aggregate, on a rocky matrix, of thick Malachite crystals pseudomorphous after Azurite. They have faces with a fibrous aspect and silky luster and are partially coated by laminar, colorless, clear and very bright Baryte crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 10 × 7.4 × 2.2 cm = 3.94” × 2.91” × 0.87”

Main crystal size: 3.3 × 1.6 cm = 1.30” × 0.63”

Malachite after Azurite with Baryte. Malachite after Azurite with Baryte.
Malachite after Azurite
Malachite after Azurite. Malachite after Azurite.
 

TR66AF1: Drusy bladed Malachite crystals, pseudomorphous after Azurite, forming rosettes which have very well defined faces and curvatures. They have a very deep color and a silky luster.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2017, page 106
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (± 2014)

Specimen size: 12.7 × 7.3 × 3 cm = 5.00” × 2.87” × 1.18”

Main crystal size: 3.1 × 3.1 cm = 1.22” × 1.22”


SONORA / Milpillas Mine (Brochantite)

Brochantite
 

TN87AL4: Aggregate of idiomorphic Brochantite crystals, with sharp faces and edges, very deep color, covered by a later growth, of very aerial fibrous crystals, lighter in color and with a satin luster.
We will send the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 3.2 × 2.1 × 1.4 cm = 1.26” × 0.83” × 0.55”

Main crystal size: 2.5 × 0.6 cm = 0.98” × 0.24”

Former collection of Bob Noble
Brochantite. Brochantite.
Brochantite
Brochantite. Brochantite.
 

TH88AE9: Aggregate of elongated idiomorphic crystals with very well defined faces and edges and sharp chisel-like terminations. Their definition, crystal size, as well as their color and luster and, in general, very high quality, make them the world's best for this species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 3.6 × 2.5 × 1 cm = 1.42” × 0.98” × 0.39”

Main crystal size: 1.2 × 0.5 cm = 0.47” × 0.20”

Brochantite
 

TW89AB2: A novelty at Tucson 2015. Fibrous Brochantite is very well known at the Milpillas mine but this sample has aggregates of elongated idiomorphic crystals with very well defined faces and edges and chisel like well-terminations. In our opinion, the world's best for the species for their definition, crystal size, as well as their color and luster and, in general, very high quality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 4.5 × 3.1 × 1.7 cm = 1.77” × 1.22” × 0.67”

Main crystal size: 1.6 × 0.3 cm = 0.63” × 0.12”

Brochantite. Front
Front
Brochantite. Rear
Rear
Brochantite
Brochantite. Brochantite.
 

TD73AB1: A novelty at Tucson 2014. Although the Brochantites from the Milpillas Mine are well-known, this time they appear in solid, chisel like well-terminated crystals, which makes them, in our opinion, the world's best for the species for their luster, sharpness and, in general, very high quality.
The specimen has been photographed and published in the magazine ‘Mineral Up’ number 01/2015, page 43
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 4.9 × 4.8 × 0.7 cm = 1.93” × 1.89” × 0.28”

Main crystal size: 1.4 × 0.5 cm = 0.55” × 0.20”

Brochantite
 

TC40AC9: Aggregates of very elongated idiomorphic crystals with very well defined faces and edges coated by a later generation with a satin luster and lighter green fibrous Brochantite growths. The main crystal has a perfect termination, as shown in the close-up photo. In our opinion, the world's best for the species for their definition, crystal size, as well as their color and luster and, in general, very high quality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 6.7 × 4.1 × 1.4 cm = 2.64” × 1.61” × 0.55”

Main crystal size: 6.6 × 0.4 cm = 2.60” × 0.16”

Brochantite. Front
Front
Brochantite.
Brochantite. Top
Top
Brochantite
Brochantite. Brochantite.
 

TA26AB1: A novelty at Tucson 2014. Although the Brochantites from the Milpillas Mine are well-known, this time they appear in solid, chisel like well-terminated crystals, which makes them, in our opinion, the world's best for the species for their luster, sharpness and, in general, very high quality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 11 × 7 × 3.4 cm = 4.33” × 2.76” × 1.34”

Main crystal size: 1.5 × 0.3 cm = 0.59” × 0.12”

Brochantite
 

TA97AD3: Aggregate, on matrix, of elongated crystals, some of them doubly terminated, with very well defined faces and edges and sharp chisel-like terminations. The crystals are very bright and have a very deep color. Due these characteristics, in our opinion, they can be considered as the best for the species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 13.2 × 12.2 × 7 cm = 5.20” × 4.80” × 2.76”

Main crystal size: 1.3 × 0.4 cm = 0.51” × 0.16”

Brochantite. Brochantite.

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