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Rare Minerals
These galleries are dedicated to rare minerals.
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Jahnsite (CaMnMg) #26944
Tip Top mine, Custer Co., South Dakota, United States
Chemical Formula: (Ca,Mn)(Fe++,Mn++)Fe++2Fe+++2(PO4)4(OH)2•8(H2O)
Size: Sm Cabinet

Glassy light brown Jahnsite microcrystals to 1.5mm associated with micro deep red Robertsite, and white blades of possible Fairfieldite on Quartz matrix.

Overall: 5.5 x 1.5 x 3 cm
Sold
$40.00
More information on Jahnsite (CaMnMg) on Webmineral.com or MinDat.org



Jahnsite - (CaMnMn) #21313
Bendada Quarry, Belmonte, Beira Alta, Portugal
Chemical Formula: (Ca,Mn)(Fe++,Mn++)Fe++2Fe+++2(PO4)4(OH)2•8(H2O)
Size: Miniature

LIght brown micro crystals. One of the rarer members of the Jahnsite group.

Overall: 4.5 x 2.5 x 1.5 cm
Sold
$30.00
More information on Jahnsite - (CaMnMn) on Webmineral.com or MinDat.org



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Junitoite with Kinoite #DC25846
Christmas Mine, Gila Co., Arizona, United States
Cooke Collection
Type Locality
Chemical Formula: CaZn2Si2O7•(H2O)
Size: Thumbnail

Patches of compact pearly-colorless bladed Junitoite crystals to 1.5mm with blue Kinoite crystals. The slight violet tint to the Junitoite is possible Smectite.

Overall: 3 x 2 x 2 cm
Available
$50.00
More information on Junitoite on Webmineral.com or MinDat.org

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Last modified: September 1, 2010