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EP99AA1: Olivenite
Aggregate of elongated crystals, a lot of them doubly terminated, with slightly curved faces and edges, with the olive-green color characteristic of the species and on matrix. A Cornish classic that is with two historical labels without reference to any collection that we will send to the buyer.
Cornwall  England / United Kingdom
Specimen size: 5 × 3 × 2.8 cm = 1.97” × 1.18” × 1.10”
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RQ80F9: Olivenite
Fine specimen of this rare arsenate. Acicular crystals are grouped in very definite aggregates, with the classic olive-green color for which the mineral is named, on a Quartz matrix. Cornwall is the type locality for the species.
Cornwall  England / United Kingdom
Specimen size: 6.2 × 4.5 × 3.3 cm = 2.44” × 1.77” × 1.30”
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FK10AA1: Olivenite
Aggregates, on matrix, of rod-shaped crystals, most of them doubly terminated, with an olive-green color, typical for most of the samples of the species. The sample has been analyzed and we will send a copy of the analysis to the buyer. Very unusual, as are many of the samples from this collection.
Ángeles 1ª Mine, Paterna del Campo, Comarca El Condado, Huelva, Andalusia  Spain (03/2011)
Specimen size: 4.6 × 3.2 × 1.2 cm = 1.81” × 1.26” × 0.47”
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MB79D6: Olivenite
This specimen has crystals of Olivenite all over it, but in the center there is pocket with thick, brilliant, and intense beautiful green crystals. More beautiful that one can really expect for an infrequent mineral
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia
Specimen size: 5.2 × 3.4 × 2.8 cm = 2.05” × 1.34” × 1.10”

Main crystal size: 1 × 0.4 cm = 0.39” × 0.16”
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EZ10AD8: Olivenite and Azurite
A novelty at Sainte Marie-aux- Mines 2016. Aggregates of acicular Olivenite crystals, individualized or forming radial aggregates, with the olive-green color typical for the species, on limonite matrix and with rosette aggregates of lenticular Azurite crystals with a vivid and deep color. The Olivenite has been analyzed and we’ll send a copy of the analysis to the buyer. As usual with the Moroccan novelties, the locality is not yet completely confirmed, but it is very plausible that it is Tazalarht.
Tazalarht mining area, Taroudant Province, Souss-Massa Region  Morocco (2016)
Specimen size: 4.1 × 2.8 × 2.4 cm = 1.61” × 1.10” × 0.94”
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EW11AD8: Olivenite and Azurite
A novelty at Sainte Marie-aux- Mines 2016. Aggregates of acicular Olivenite crystals, individualized or forming radial aggregates, with the olive-green color typical for the species, on limonite matrix and with rosette aggregates of lenticular Azurite crystals with a vivid and deep color. The Olivenite has been analyzed and we’ll send a copy of the analysis to the buyer. As usual with the Moroccan novelties, the locality is not yet completely confirmed, but it is very plausible that it is Tazalarht.
Tazalarht mining area, Taroudant Province, Souss-Massa Region  Morocco (2016)
Specimen size: 3.9 × 3.6 × 2.3 cm = 1.54” × 1.42” × 0.91”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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EA13AD8: Olivenite and Azurite
A novelty at Sainte Marie-aux- Mines 2016. Aggregates of acicular Olivenite crystals, individualized or forming radial aggregates, with the olive-green color typical for the species, on limonite matrix and with rosette aggregates of lenticular Azurite crystals with a vivid and deep color. The Olivenite has been analyzed and we’ll send a copy of the analysis to the buyer. As usual with the Moroccan novelties, the locality is not yet completely confirmed, but it is very plausible that it is Tazalarht.
Tazalarht mining area, Taroudant Province, Souss-Massa Region  Morocco (2016)
Specimen size: 3.5 × 3.3 × 1.8 cm = 1.38” × 1.30” × 0.71”
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EX14AD8: Olivenite and Azurite
A novelty at Sainte Marie-aux- Mines 2016. Aggregates of acicular Olivenite crystals, individualized or forming radial aggregates, with the olive-green color typical for the species, on limonite matrix and with rosette aggregates of lenticular Azurite crystals with a vivid and deep color. The Olivenite has been analyzed and we’ll send a copy of the analysis to the buyer. As usual with the Moroccan novelties, the locality is not yet completely confirmed, but it is very plausible that it is Tazalarht.
Tazalarht mining area, Taroudant Province, Souss-Massa Region  Morocco (2016)
Specimen size: 4.5 × 3.9 × 2.8 cm = 1.77” × 1.54” × 1.10”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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TP63M0: Olivenite with Azurite, Malachite and Duftite
Excellent color Olivenite crystal aggregate with a good size for the species and the locality. Accompanied by Malachite pseudomorphous after Azurite, also Azurite crystals with an excellent transparency and definition and green aggregates and concretions of Duftite. The Duftite has been analyzed and we will send a copy of the analysis to the buyer. A high quality specimen from a classic locality.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia
Specimen size: 5.7 × 5.3 × 3.2 cm = 2.24” × 2.09” × 1.26”
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MD63L0: Olivenite with Malachite
Groups of very acute Olivenite crystals, some of them doubly terminated, totally or partially covered by botryoidal Malachite and a color that contrasts with the dark Limonite matrix. The specimen comes from a locality not yet well known.
Núbia, Ibitiara, Bahia, Northeast Region  Brazil (2006)
Specimen size: 7.7 × 6.4 × 5.5 cm = 3.03” × 2.52” × 2.17”

Main crystal size: 0.9 × 0.2 cm = 0.35” × 0.08”
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FY48J6: Olivenite with Malachite
Radial groups of acicular crystals with the olive color characteristic of the species. The sample also has concretions of Malachite and it is on matrix.
The sample has all the virtues we love on best Folch’s specimens. Presence, classic taste and pedigree, enhanced by the labels of Sir Arthur Russell collection and, originally, from Lady Elizabeth Anne Coxe Hippisley collection.
Wheal Gorland, Saint Day, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom
Specimen size: 8.2 × 4.5 × 4.6 cm = 3.23” × 1.77” × 1.81”
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RX92M0: Olivenite with Pitticite
Classic acicular olive green Olivenite crystals, very bright, and on a rocky matrix with Pitticite. This specimen is accompanied by a handwritten Folch label and the collection card (Nr. 7344).
Majuba Hill Mine, Antelope District, Pershing County, Nevada  USA (±1961)
Specimen size: 5.8 × 3.3 × 2.8 cm = 2.28” × 1.30” × 1.10”

Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”
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MB89AJ8: Olivenite with Quartz
Groups of dipyramidal Olivenite crystals on Quartz matrix, with very well defined faces and edges and polycrystalline growths. An English classic, unusually well crystallized. It is with an old handwritten label that we will send to the buyer.
Cornwall  England / United Kingdom
Specimen size: 5.3 × 3.4 × 2.4 cm = 2.09” × 1.34” × 0.94”
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TT51AL2: Olivenite with Quartz
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”
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TR92AL2: Olivenite with Quartz
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”
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TR48AL5: Olivenite with Quartz and Hydroniumjarosite
A novelty at Tucson 2020. Groups of very sharp Olivenite crystals, many of them doubly terminated, with very well defined faces and edges and perfect terminal faces, transparent or translucent, bright and with a very deep olive-green color. On matrix with coatings of small yellowish-white botryoidal aggregates of Hydroniumjarosite. As in so many other occasions with Milpillas, among the best for the species.
This sample has been referenced and pictured, as a novelty in Ste. Marie Virtual 2020, in the magazine 'Le Règne Minéral' number 154, page 45
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)
Specimen size: 9.6 × 6.4 × 4 cm = 3.78” × 2.52” × 1.57”

Main crystal size: 1.4 × 0.3 cm = 0.55” × 0.12”
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NB37AL5: Olivine (Group)
Crystal very rich in faces, very sharp, transparent, bright and with a very intense color. The specimens from this locality, the most classic for gem Olivine, are considered authentic historical oddities. The specimen is accompanied by an old handwritten label (which we will send to the buyer) in which the original collection does not appear.
St John's Island (Zebirget), Red Sea  Egypt
Specimen size: 1.7 × 1.3 × 0.7 cm = 0.67” × 0.51” × 0.28”
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TLF86AN9: Olmiite
Sheaf-like growth of Olmiite crystals with well defined faces and edges, with good luster and a pale brown color, on matrix. We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa
Specimen size: 2.7 × 2 × 2.1 cm = 1.06” × 0.79” × 0.83”
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EC97AK3: Olmiite
Group of crystals of short prismatic habit, well developed, of good size for the species, translucent and lustrous, color between pink and reddish, as was typical of the first finds of this species.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 3.2 × 2.8 × 2.1 cm = 1.26” × 1.10” × 0.83”
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EP67AK3: Olmiite
Well defined crystals of short prismatic habit, with phantoms, of good size for the species, on matrix. Some of the crystals are doubly terminated. Color between pink and reddish, typical of the first finds of this species.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 4.1 × 3 × 2 cm = 1.61” × 1.18” × 0.79”

Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”
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AX49AD6: Olmiite
Doubly terminated crystal on matrix. It is very individualized, translucent, bright and with a good color, with fine polycrystalline growths on the surface of its faces.
The sample is from the Sylvane collection, which label we’ll send to the buyer.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 2.3 × 2.2 × 2.2 cm = 0.91” × 0.87” × 0.87”
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MH31M5: Olmiite
A novelty of Munich 2008. The sample forms globular growths of well defined terminations of crystals. The deeper color is similar to the older pieces, classified then as Poldervaartite.
This specimen was photographed for the ‘what’s new at Munich 2008’ section of the magazine ‘Mineralien Welt’ and appears on page 18 of number 1/2009.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (10/2008)
Specimen size: 9.2 × 5.8 × 3 cm = 3.62” × 2.28” × 1.18”

Main crystal size: 2.8 × 2.1 cm = 1.10” × 0.83”
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EQ99: Olmiite
Excellent color, perfection, and esthetic: the form is really nice, it looks like a snowman. A exclusive and funny thing.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 2.5 × 1.7 × 1.7 cm = 0.98” × 0.67” × 0.67”
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EG6K9: Olmiite
Excellent miniature. The prismatic crystals are similar to a wheatsheaf with good brilliance and color. On rocky matrix.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 2.5 × 2 × 1.4 cm = 0.98” × 0.79” × 0.55”

Main crystal size: 1.2 × 0.8 cm = 0.47” × 0.31”
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EQ6E8: Olmiite
Two complex crystals placed on their matrix to give a very aerial sample. It stands out for the sharpness of the crystal form, which is prismatic and double–pyramid, which is not that common in Kuruman. While the color is a little less intense than other samples it is compensated for by the intense brilliance, which is due to the large number of flat faces on the crystals.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)
Specimen size: 2.8 × 2.6 × 1.9 cm = 1.10” × 1.02” × 0.75”

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The Desmond Sacco
Collection
Best Specimens
Best Specimens
The Folch Collection
The Folch
Collection
Home Page Minerals
Home Page
Minerals