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Fairfieldite with Roscherite & Englishite

#56957

Fairfieldite with Roscherite & Englishite

#56957
Availability
Sold
Size
5 x 4 x 3 cm - Miniature 
Formula
Ca2Mn2+(PO4)2·2H2O (RRUFF)
Locality
Tip Top mine, Custer Co., South Dakota, United States
Tagged
phosphate , pegmatite mineral

This is a verified Fairfieldite by Raman, XRD, and EDS. The Fairfieldite occurs on dark olive green Roscherite as white disc-shaped crystals which are sometimes stacked but mostly as singular crystals. The color is a murky white. The size of the Fairfieldite crystals are about 0.3mm. Little white pearly cottonball-like crystal groups of Englishite are rare on the specimen and occurs on a reddish brown Roscherite. The matrix is Beryl. The Roscherite, Fairfieldite and Englishite occur along fracture fillings in the Beryl. 

XRD Confirmed, EDS Confirmed, Raman

Fairfieldite

Formula
Ca2Mn2+(PO4)2·2H2
Crystal System
Triclinic 
Crystal Habit
Foliated, Fibrous, Euhedral Crystals 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous - Pearly 
Color
greenish white, white, light yellow 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle - Uneven 
Hardness
3.5 

Data courtesy of Webmineral.

Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Raman

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