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EZR99AP2: Copper and Calcite with Copper inclusions
Scalenohedral crystals of Calcite, one of them clearly dominant, accompanied by leafy aggregates of Copper surrounding the Calcite crystals externally but with the particularity that other copper crystals are included within the scalenohedrons of Calcite, giving them the reddish color so characteristic of this type of specimen, an American classic.
Quincy Mine, Hancock, Houghton County, Michigan  USA
Specimen size: 6.1 × 4.8 × 2.3 cm = 2.40” × 1.89” × 0.91”

TXR13CD6: Copper with Analcime
Very aerial group formed by well-defined Copper crystals in stalagmitic growth, with their characteristic bronze color that has not been lost even though it is a very old specimen. A large and sharp Analcime crystal makes the piece even more attractive. This specimen, well documented and of very considerable size, comes from the Fernando Reyna collection and it is very noteworthy that the Copper crystals are so well defined in such a large specimen.
Centennial Mine, Centennial, Houghton County, Michigan  USA
Specimen size: 20.2 × 13.3 × 4.2 cm = 7.95” × 5.24” × 1.65”

Main crystal size: 5 × 2.4 cm = 1.97” × 0.94”
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TV46AJ8: Copper with Calcite
Very aerial dendritic native Copper growths on matrix with aggregates of complex Calcite crystals that are translucent, bright, and have a pale pink color. This association of native Copper and well crystallized Calcite is known but rare at Keweenaw.
The sample is from the American mineral dealer Al McGuinness whose label we will send to the buyer.
Keweenaw Copper District, Ontonagon County, Michigan  USA
Specimen size: 11.4 × 7.5 × 5.1 cm = 4.49” × 2.95” × 2.01”
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TE47H3: Copper with Calcite
Good arborescent group, very aerial, with sharp Copper crystals in a pocket filled with very small crystals of Calcite. Even considering Copper as a common species for the locality, good samples are actually rare.
Cole Mine (Cole shaft), Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA
Specimen size: 6.9 × 4.4 × 4.5 cm = 2.72” × 1.73” × 1.77”
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TV66Z9: Copper with Calcite
Dendritic growth of Copper crystals with a rounded shape but with some smooth and very well defined faces. The aggregate is on a very unusual matrix with translucent white rhombohedral Calcite crystals. The sample is with a Steven C. Chamberlain collection label that we will send to the buyer.
Houghton County, Michigan  USA
Specimen size: 7.5 × 4.6 × 3.6 cm = 2.95” × 1.81” × 1.42”
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EC86P2: Copper with Calcite
Very aerial aggregate of big, bright crystals whose faces are very well defined for the species and contrasting with the white coatings of Calcite.
The sample is with an old label of the collection of the Museum of Mineralogy and Petrology of Berlin University.
Lake Superior, Keweenaw County, Michigan  USA
Specimen size: 6.9 × 3.8 × 3.4 cm = 2.72” × 1.50” × 1.34”

Main crystal size: 2.9 × 2 cm = 1.14” × 0.79”
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EM37AA1: Copper with Calcite
Arborescent growth of elongated crystals with well-defined faces and edges, with a considerable length and on a small crystalline Calcite matrix. A museum quality sample.
Lake Superior, Keweenaw County, Michigan  USA
Specimen size: 16 × 6.5 × 1.5 cm = 6.30” × 2.56” × 0.59”
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AE66M6: Copper with Calcite
Arborescent growth of very well defined crystals (for the species) that also have good size. They are associated with Calcite crystals. The sample has very good quality for the locality, a classic for copper minerals.
We’ll send two labels to the buyer, Silvane’s label and a handwritten label, corresponding to the Folch Collection (num. 9060).
New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona  USA (±1965)
Specimen size: 6 × 5.3 × 3.1 cm = 2.36” × 2.09” × 1.22”

Main crystal size: 1.1 × 1 cm = 0.43” × 0.39”
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TH26Q3: Copper with Calcite
Very aerial dendritic growth of cubic crystals, some of them sharp and with very well defined faces and edges, with a transparent rhombohedral crystal of Calcite crowning the piece.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia
Specimen size: 2.2 × 2.2 × 2.1 cm = 0.87” × 0.87” × 0.83”
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AM76M8: Copper with Calcite
Arborescent growth with globular terminations, with two groups of crystals of white, very well defined Calcite. Very elegant.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia
Specimen size: 3.7 × 3.3 × 2.8 cm = 1.46” × 1.30” × 1.10”
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MV37AJ6: Copper with Calcite and Malachite
Surely this ample offers the most classic image of what a native Copper sample should be, with delicate and very well balanced arborescent growths of crystals with rounded faces and edges and with the precise matrix to give it the necessary esthetic character.
Manto Cuba Mine, San Pedro de Cachiyuyo, Inca de Oro, Chañaral Province, Atacama Region  Chile
Specimen size: 7 × 4.5 × 3.4 cm = 2.76” × 1.77” × 1.34”
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TT47N0: Copper with Cerussite and Cuprite
A novelty for Tucson 2009. Dendritic aggregate crystals, deformed but very sharp faces and edges. Partially covered by octahedral crystals of Cuprite and small crystals of Cerussite, which is a very uncommon paragenesis. The sample is from a recent find (July and August of 2008) at a Russian locality practically unknown until now.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Rivista Mineralogica Italiana’ on page 280 in number 2009/4
Poteryaevskoe Mine, block 2-1, ↓100 m., Rubtsovsky District, Altai Krai  Russia (06-08/2008)
Specimen size: 3.3 × 3.1 × 2.3 cm = 1.30” × 1.22” × 0.91”
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EH17AD8: Copper with Cuprite
Dendritic growth of crystals with perfectly defined faces and edges, very visibly twinned according to the Spinel law, and uniformly coated by Cuprite, with the typical reddish color. The sample, very fine and esthetic, is excellent in all orientations.
The specimen has been reviewed, photographed and published in the magazine ‘Mineral Up’ on page 52 of the 2016/02 edition
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (2016)
Specimen size: 4.3 × 3.9 × 2.3 cm = 1.69” × 1.54” × 0.91”
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TXF91AQ1: Copper with Cuprite
Dendritic growth of very elongated Copper crystals, with reddish tones due to Cuprite coatings, a rare association in Ontonagon specimens. The specimen comes from the collection of William Severance (number 94-14), whose number on a small piece of paper we will send to the buyer.
White Pine Mine, White Pine, Ontonagon County, Michigan  USA
Specimen size: 12.7 × 5.1 × 1 cm = 5.00” × 2.01” × 0.39”
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TT73AF0: Copper with Cuprite
Dendritic Copper crystals that are very elongated and bright with well-defined faces and edges with very visible spinel law twinning. They are partially coated by reddish Cuprite.
The sample is with an old Copper City Rock Shop label that we’ll send to the buyer.
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona  USA
Specimen size: 9 × 5.2 × 4.3 cm = 3.54” × 2.05” × 1.69”
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ETW74AP3: Copper with Cuprite
Arborescent aggregate of native Copper, very aerial, with well defined crystals for the species, with good luster and partially coated by very sharp octahedral Cuprite crystals, lustrous and deep red.
Liufengshan Mine, Guichi District, Chizhou Prefecture, Anhui Province  China (06/2022)
Specimen size: 11.4 × 12.3 × 4.8 cm = 4.49” × 4.84” × 1.89”
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RP38F8: Copper with Cuprite
Aerial growth of crystals of Cuprite (cube + dodecahedra) with slightly curved edges and on a matrix of native copper crystals. It was a 1961 gift from Mr. Albert Haag, of Tucson, as shown on the record for this one.
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA (±1961)
Specimen size: 3.4 × 2.3 × 1.9 cm = 1.34” × 0.91” × 0.75”
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JN11J0: Copper with Cuprite
The specimen is from an old and classic locality. The densely arborescent group is formed by small crystals partially covered by Cuprite.
The specimen is from the Jan Buma collection (num. 930809) and we’ll send the card of the collection with it.
Geevor Mine, Pendeen, Saint Just District, Cornwall  England / United Kingdom
Specimen size: 5.1 × 4.2 × 1.5 cm = 2.01” × 1.65” × 0.59”
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M891D: Copper with Cuprite
Unbelievable esthetics. Spinel twin Copper crystals with added branches. Everything covered by a thin coating of Cuprite which gives it a nice reddish color. It looks like a Spinel twin Copper that received an electric shock! Sorry for the analogy but I'm so impressed that I cannot find a better way of describing it.
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (2001)
Specimen size: 11.2 × 6.3 cm = 4.41” × 2.48”
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MB9E0: Copper with Cuprite
This comes from the great find of native copper made at the Itauz Mine. It is a very esthetic floater. There are small crystals of Cuprite among the Copper that add color and a special touch to the specimen.
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (06/03)
Specimen size: 2 × 1.5 × 0.3 cm = 0.79” × 0.59” × 0.12”
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EC26F7: Copper with Cuprite
Good definition and good construction! The lengthening of the crystals and the branch- like structure reminds one of a bird's feather. Partially covered by Cuprite but underneath a brilliant copper color.
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (09/2003)
Specimen size: 4 × 2 × 0.8 cm = 1.57” × 0.79” × 0.31”
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TR67N4: Copper with Cuprite
Extraordinarily elongated and flat crystal with a very obvious spinel twin. On its upper part it has dendritic growths of smaller Copper crystals. The reddish shade is due to a Cuprite coating.
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (2008)
Specimen size: 8.3 × 2.3 × 1 cm = 3.27” × 0.91” × 0.39”

Main crystal size: 5.2 × 1.3 cm = 2.05” × 0.51”
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TW99L5: Copper with Cuprite
Well defined skeletal growth, with a very marked spinel-law twin, on a dendritic growth of small copper crystals. Both the base and the main crystal are partially covered by Cuprite. The specimen has been reviewed, photographed and published as a novelty from Tucson 2008 in the magazine ‘Lapis’ on page 37, volume 33, number 4
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (2007)
Specimen size: 7.1 × 3.1 × 0.7 cm = 2.80” × 1.22” × 0.28”
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AK10N8: Copper with Cuprite
Dendritic growth with flattened crystals, one of them clearly dominant. They have well defined crystalline forms. The simplicity is very esthetic and representative.
Itauz Mine, Dzhezkazgan, Karaganda Region  Kazakhstan (2003)
Specimen size: 11.2 × 9.3 × 1.8 cm = 4.41” × 3.66” × 0.71”

Main crystal size: 3 × 0.7 cm = 1.18” × 0.28”
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EH6J8: Copper with Cuprite
Although they were previously known, we can consider those specimens a novelty. The group is arborescent and coated by secondary copper species (mainly Malachite) and crystals of Cuprite which are small deformed octahedrons.
Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (02/2007)
Specimen size: 7.8 × 6.7 × 3.3 cm = 3.07” × 2.64” × 1.30”

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