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Ferrowyllieite

#41619

Ferrowyllieite

#41619
Availability
Sold
Size
4.5 x 3 x 3 cm - Miniature 
Formula
Na2Fe2+2Al(PO4)3 (RRUFF)
Locality
Victory mine, Custer Co., South Dakota, United States
Tagged
phosphate , pegmatite mineral

Black mass of crystalline Ferrowyllieite. The mine is now Custer's sewage lagoon. Originally found at this mine with Arrojadite. Crystals occur up to 10cm. When published it was named Wyllieite and later renamed to Ferrowyllieite.

Type Locality

Ferrowyllieite

Formula
Na2Fe2+2Al(PO4)3 
Crystal System
Monoclinic 
Crystal Habit
Euhedral Crystals, Selvage 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous - Metallic 
Color
bluish green, greenish black, gray green, dark blue green 
Streak
gray green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness

Data courtesy of Webmineral.

Special Info
Type Locality

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