Dakota Matrix Minerals – Crystal and mineral specimens such as gold for the earth science student.

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Acanthite #GJ26884
Reyes Mine, Guanojuato, Mexico
Micro crystals of Acanthite to 2 mm.
Jungles Collection
Chemical Formula: Ag2S
Size: Miniature
Steel-gray cubic Acanthite crystals to 2mm with platy Polybasite crystals to 2mm.
Overall: 4 x 2 x 2 cm
Sold
$40.00
$30.00
More information on Acanthite on Webmineral.com or MinDat.org


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Antimony #DC26753
Arechuybo, Chihuahua, Mexico
Cooke Collection
Chemical Formula: Sb
Size: Sm Cabinet
Heavy piece of silvery-white massive Antimony that is coated on the backside by tan-yellow Stibiconite.
Overall: 6 x 4.5 x 5 cm
Sold
$45.00
More information on Antimony on Webmineral.com or MinDat.org


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Aurichalcite #18983
Mina Ojuela, Mapimi, Durango, Mexico
Chemical Formula: (Zn,Cu)5(CO3)2(OH)6
Size: Sm Cabinet
Thin, bladed greenish blue crystals to 6mm on spongy limonitic matrix.
Overall: 7 x 6 x 4 cm
Available
$35.00
$25.00
More information on Aurichalcite on Webmineral.com or MinDat.org
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Aurichalcite #DC26407
Mina Ojuela, Mapimi, Durango, Mexico
Cooke Collection
Chemical Formula: (Zn,Cu)5(CO3)2(OH)6
Size: Sm Cabinet
Silky light-green fibrous matted Aurichalcite all over matrix with a colorless Calcite crystal overgrowth.
Overall: 7 x 3.5 x 5.5 cm
Sold
$40.00
$30.00
More information on Aurichalcite on Webmineral.com or MinDat.org


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Calcite #DC25388
Zacatecas, Mexico
Cooke Collection
Chemical Formula: CaCO3
Size: Sm Cabinet
Nice lustrous light honey-yellow modified scalenohedral Calcite crystals to 3cm in a cluster with some attached limestone matrix.
Overall: 8 x 5 x 6.5 cm
Available
$55.00
More information on Calcite on Webmineral.com or MinDat.org
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Calcite #DC25709
Concepcion del Oro, Zacatecas, Mexico
Cooke Collection
Chemical Formula: CaCO3
Size: Miniature
Water clear highly modified round Calcite crystal to 2.5cm perched with other clear crystal on a nicely trimmed piece of matrix.
Overall: 4 x 2.5 x 2.5 cm
Available
$45.00
More information on Calcite on Webmineral.com or MinDat.org
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