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

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Smithsonite #DC24893
Sinaloa, Mexico
Cooke Collection
Chemical Formula: ZnCO3
Size: Sm Cabinet
Pinkish-purplish botryoidal Smithsonite.
Overall: 6 x 2.5 x 3 cm
Available
$45.00
More information on Smithsonite on Webmineral.com or MinDat.org
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Stibiconite #849
Altor, Sonora, Mexico
Chemical Formula: Sb+++Sb+++++2O6(OH)
Size: Miniature
Cream colored Stibiconite replacing Stibnite.
Overall: 3.5 x 2 x 3.5 cm
Sold
$30.00
More information on Stibiconite on Webmineral.com or MinDat.org


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Stilbite on Calcite #GJ21451
Charcas, San Luis Potosi,, Mexico
Jungles Collection
Chemical Formula: NaCa4[Al8Si28O72]•n(H2O) (n=28-32)
Size: Miniature
Honey yellow bow-tie and fan-like clusters of Stilbite to 5mm on gray scalenohedral Calcite to 1cm. A few of the Calcite crystals have cleaved tips, but they do not distract from this small nice piece.
Overall: 5 x 2.5 x 3 cm
Available
$35.00
More information on Stilbite on Calcite on Webmineral.com or MinDat.org
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Sulfur #GJ21213
San Felipe, Mun. de Mexicali,, Baja California Norte, Mexico
Jungles Collection
Chemical Formula: S8
Size: Sm Cabinet
Bright yellow equant Sulfur crystals to 3mm covering matrix.
Overall: 6 x 2.5 x 5 cm
Sold
$30.00
More information on Sulfur on Webmineral.com or MinDat.org


Sulfur #642
San Felipe, Baja, Mexico
Chemical Formula: S8
Size: Miniature
Translucent yellow crystals to 2mm.
Overall: 5 x 4.5 x 1.5 cm
Sold
$25.00
$5.00
More information on Sulfur on Webmineral.com or MinDat.org


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Tlapallite #GJ23102
Moctezuma mine, Moctezuma, Sonora, Mexico
Micro crystals of Tlapallite to <0.25 mm.
Type Locality
Chemical Formula: H6(Ca,Pb)2Cu3(SO4)(Te++++O3)4(Te++++++O6)
Size: Miniature
Green encrustation and micro-spheres of Tlapallite on matrix. Associated with a lighter bluish crust which is possible Tlalocite.
Overall: 5 x 2 x 3 cm
Sold
$65.00
More information on Tlapallite on Webmineral.com or MinDat.org

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