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Kingsmountite

#AH51791

Kingsmountite

#AH51791
Availability
Sold
Size
3.0 x 2.5 x 1.5 cm - Thumbnail 
Formula
Ca4Fe2+Al4(PO4)6(OH)4·12H2O (RRUFF)
Locality
Foote mine, Cleveland Co., North Carolina, United States
Tagged
phosphate , pegmatite mineral

Radial groups to 0.75mm of white or colorless Kingsmountite crystals.

Kingmountite  crystals are much like Montgomeryite both of which form lath-like crystals with a sloping terminations. It is in fact isostructural with Montgomeryite and both are members of the Calcioferrite group. It is also the iron analogue of Montgomeryite and is usually white and sometimes light pink. The best specimens are probably from Hagendorf, although many fine specimens have been collected at Foote. It is primarily a mineral which forms in pegmatites, although has occured in bat caves and hydrothermal altered phosphate rich sedimentary deposits This can be considered a good specimen with both good coverage and crystal groups. 

Type Locality

Kingsmountite

Formula
Ca4Fe2+Al4(PO4)6(OH)4·12H2
Crystal System
Monoclinic 
Crystal Habit
Bladed, Radial, Spherical 
Luster
Pearly 
Color
light brown, pearl white 
Streak
white 
Class
Monoclinic - Sphenoidal 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection
Special Info
Type Locality

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