mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Pharmacosiderite with Scorodite

#BN48217

Pharmacosiderite with Scorodite

#BN48217
Availability
Sold
Size
6 x 4.5 x 2.5 cm - Sm Cabinet 
Formula
KFe3+4(AsO4)3(OH)4·6-7H2O (RRUFF)
Locality
Wheal Gorland, St. Day dist., Cornwall, England
Tagged
arsenate

Grass green to bright green Pharmacosiderite crystals to about 0.75mm with grey to bluish Scorodite. The Scorodite is not as blue as the digital photos depict it as. A hand-written label says it was collected about 1977-1979.

Pharmacosiderite

Formula
KFe3+4(AsO4)3(OH)4·6-7H2
Crystal System
Isometric 
Crystal Habit
Blocky, Crystalline - Coarse, Earthy 
Cleavage
Indistinct, None, None 
Luster
Adamantine - Resinous 
Color
olive green, emerald green, reddish brown, yellowish brown, honey yellow 
Streak
yellowish green 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Sectile 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2019 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map