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0 item @ $0.00  

Perloffite in Ludlamite with Vivianite

#BN53830

Perloffite in Ludlamite with Vivianite

#BN53830
Availability
Sold
Size
1 x 1 x 0.8 cm - Thumbnail 
Formula
BaMn2+2Fe3+2(PO4)3(OH)3 (RRUFF)
Locality
Big Chief mine, Pennington Co., South Dakota, United States
Tagged
phosphate , pegmatite mineral

Small 1cm specimen of mostly Ludlamite with Vivianite, but also about 0.5mm black, pointed crystals of rare Perloffite. The two arrows point to the spot where the actual crystals are located. The large black (dark bluish green) area on the third photo is Vivianite.

There will be another, more expensive, Perloffite on Friday's update.

Type Locality

Perloffite

Formula
BaMn2+2Fe3+2(PO4)3(OH)3 
Crystal System
Monoclinic 
Crystal Habit
Spear Head 
Cleavage
Perfect, None, None 
Luster
Vitreous - Adamantine 
Color
brownish black, greenish brown, dark brown, black 
Streak
greenish yellow 
Class
Monoclinic - Prismatic 
Hardness

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Special Info
Type Locality

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