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

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Brochantite #26492
Liptovska, Dubrava, Slovakia
Chemical Formula: Cu4(SO4)(OH)6
Size: Miniature
Nice lustrous deep green Brochantite crystals to 1mm and microcrystalline coatings covering matrix.
Overall: 4 x 3 x 3.5 cm
Sold
$35.00
More information on Brochantite on Webmineral.com or MinDat.org


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Brookite #MMI168
Trodok, Kharan district, Baluchistan, Pakistan
Mountain Minerals International specimen
Chemical Formula: TiO2
Size: Sm Cabinet
Beautiful red-brown very thin Brookite crystals with striated faces to 2cm with colorless Quartz crystals. Although Brookite occurs around the world these crystals are very nice and quite large.
Overall: 7 x 4 x 5 cm
Available
$750.00
More information on Brookite on Webmineral.com or MinDat.org
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Brookite #25872
Plan-du-Lac, , Isere, France
Micro crystals of Brookite to 1 mm.
Chemical Formula: TiO2
Size: Miniature
Deep red, translucent micro crystals. Good locality specimn.
Overall: 3.5 x 2.5 x 1.5 cm
Available
$35.00
More information on Brookite on Webmineral.com or MinDat.org
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Brookite #23176
Magnet Cove, Hot Spring Co., Arkansas, United States
Chemical Formula: TiO2
Size: Miniature
Black Brookite crystals to 2mm associated with colorless Quartz crystals.
Overall: 4 x 2.5 x 3.5 cm
Available
$30.00
More information on Brookite on Webmineral.com or MinDat.org
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Bukovskyite #DP21890
Kank, Kutna Hora, Bohemia, Czech Republic
Polak Collection Type Locality
Chemical Formula: Fe+++2(AsO4)(SO4)(OH)•7(H2O)
Size: Capsule
Light brown pieces to 5mm of powdery Bukovskyite in capsule.
Available
$35.00
More information on Bukovskyite on Webmineral.com or MinDat.org
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Burangaite #24750
Buranga pegmatite, Gatumba district, Western Province, Rawanda
Type Locality
Chemical Formula: (Na,Ca)2(Fe++,Mg)2Al10(PO4)8(OH,O)12•4(H2O)
Size: Miniature
Blue crystal grains in Augelite matrix. Extremely rare phosphate found in one pegmatite worldwide. This mineral was originally described in 1965 by Bertossa from the Buranga pegmatite, which hosts three other type minerals - all phosphates.
Overall: 3.5 x 3 x 1 cm
Sold
$155.00
More information on Burangaite on Webmineral.com or MinDat.org

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