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Parafransoletite with Roscherite & Montgomeryite

#BN47525

Parafransoletite with Roscherite & Montgomeryite

#BN47525
Availability
Sold
Size
1.2 x 1 x 1 cm - Thumbnail 
Formula
Ca3Be2(PO4)2(PO3OH)2·4H2O (RRUFF)
Locality
Tip Top mine, Custer Co., South Dakota, United States
Tagged
beryllium , pegmatite mineral

This is indeed one of the richest Parafransoletites around. The thing is overdosed in little white bladed, elongated Parafransoletite crystals with blunt terminations. The terminations are inclined on one side and some are kind of hackly. Many of the crystals are colorless at the center becoming white at the terminations. Most of the crystals are singles, but there are good examples of groups of two or three maybe four or five in divergent habits. The crystals measure about 0.3-0.4mm. The bright red groups are Montgomeryite, but most of the dark red to purplish red is Roscherite.

Don't pass this one up.

Type & Only Locality

Parafransoletite

Formula
Ca3Be2(PO4)2(PO3OH)2·4H2
Crystal System
Triclinic 
Crystal Habit
Spear Head, Wheat Sheaf, Radial 
Cleavage
None, None, None 
Luster
Vitreous - Silky 
Color
colorless, white 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Dr. Buford L. Nichols Collection
Special Info
Type & Only Locality

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