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Leucophosphite with Hureaulite

#PD34511

Leucophosphite with Hureaulite

#PD34511
Availability
Sold
Size
7 x 5 x 4 cm - Sm Cabinet 
Formula
KFe3+2(PO4)2(OH)·2H2O (RRUFF)
Locality
Tip Top mine, Custer Co., South Dakota, United States
Tagged
phosphate

This is a very vuggy matrix of Triphylite with abundant micro crystals of glasst Leucophosphite (greenish to purple), pink Hureaulite, Jahnsite, Tavorite, and Jahnsite-(CaMnMg). It is a fascinating specimen. The second photo shows a group of Jahnsites in an "S" growth pattern.

Leucophosphite

Formula
KFe3+2(PO4)2(OH)·2H2
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Dull 
Color
brown, brownish yellow, colorless, greenish, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
3.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

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