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Hureaulite with Jahnsite

#BN50130

Hureaulite with Jahnsite

#BN50130
Availability
Sold
Size
10.5 x 8 x 5 cm - Cabinet 
Formula
Mn2+5(PO4)2(PO3OH)2·4H2O (RRUFF)
Locality
Tip Top mine, Custer Co., South Dakota, United States
Tagged
phosphate , pegmatite mineral

Large cabinet specimen loaded with pink Hureaulite. There are several good crystals on the specimen, the largest to 1cm. The arrows point to Jahnsite composite crystals pseudomorphing to Leucophosphite. Ex. John F. Barlow collection with tag.

Hureaulite

Formula
Mn2+5(PO4)2(PO3OH)2·4H2
Crystal System
Monoclinic 
Crystal Habit
Massive, Compact, Fibrous 
Cleavage
Distinct, None, None 
Luster
Vitreous - Greasy 
Color
red, white, grayish white, yellowish white, reddish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection

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