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Jahnsite Hureaulite Tavorite & Collinsite

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BCK652729

Jahnsite Hureaulite Tavorite & Collinsite

Kay Robertson collection
Classic Locality

Description Tabs

Description
Locality: 
Tip Top Mine, Fourmile, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.2 × 2.5 cm
Description

You are bidding on a large, very vuggy and rich sample from the Tip Top Mine and Kay Robertson's collection. The numerous vugs host crystals of jahnsite-CaMnMg, hureaulite, leucophosphite, tavorite, robertsite, rockbridgeite and collinsite. Could be trimmed into many good specimens. Too much here to photograph!

Mineral Data
What's on the rock

Jahnsite

Synonym Of: 

Jahnsite-(CaMnFe)

Formula: 
{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMg)

Formula: 
{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMn)

Formula: 
{Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(MnMnMn)

Formula: 
{Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Tavorite

Formula: 
LiFe3+(PO4)(OH)
Strunz: 
8.BB.05
Crystal System: 
Triclinic
Hardness: 
5.0
Type Locality: 
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil

Collinsite

Formula: 
Ca2(Mg,Fe2+)(PO4)2·2H2O
Strunz: 
8.CG.05
Hardness: 
3.0 - 3.5
Type Locality: 
Francois Lake phosphate occurrence, Francois Lake, Omenica Mining Division, British Columbia, Canada

Seller Information

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