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Phosphosiderite with Barbosaite

#56365
Phosphosiderite from Bull Moose mine, Custer Co., South Dakota, United States - 56365
Phosphosiderite from Bull Moose mine, Custer Co., South Dakota, United States - 56365

Phosphosiderite with Barbosaite

#56365
Availability
Available
Price
$55.00
Size
5.5 x 5 x 2.5 cm - Sm Cabinet 
Reduced Price
$40.00
Formula
Fe3+PO4·2H2O (RRUFF)
Locality
Bull Moose mine, Custer Co., South Dakota, United States
Tagged
phosphate , pegmatite mineral

Red, very lustrous, plates of Phosphosiderite to 1mm plus. The second photo shows a suberb twinned crystal. The pocket contains numerous crystals with a little purple Strengite. Another pocket and other areas are crude blacky crystals of Barbosalite. The matrix itself is massive tough Barbosalite (last photo).

Phosphosiderite

Formula
Fe3+PO4·2H2O 
Crystal System
Monoclinic 
Crystal Habit
Encrustations, Spherical 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, purple, pink, red, red violet 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
3.5-4 

Data courtesy of Webmineral.

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