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Trolleite with Rutile

#BN54619

Trolleite with Rutile

#BN54619
Availability
Sold
Size
11 x 5.5 x 4 cm - Cabinet 
Formula
Al4(PO4)3(OH)3 (RRUFF)
Locality
Hålsjöberg, Torsby, Värmland, Sweden
Tagged
phosphate

The specimen was originally from Peter Lyckberg, a good mineralogist. It was identified as Trolleite, which is probably the light blue. However there are also other shades of blue which may be other rare phosphates such as Berlinite, Burangaite, Scorzalite and/or Lazulite. Sight ID is not possible on this stuff. The red is definitely granular Rutile. The white is likely Gatumbite. 

Trolleite

Formula
Al4(PO4)3(OH)3 
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
light blue, light green 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal - Uneven 
Hardness
5.5-6 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Trolleite
On Dakota Matrix
Other Available Trolleite
WebMineral
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Mindat
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