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Scorzalite with Trolleite

#43826

Scorzalite with Trolleite

#43826
Availability
Sold
Size
2.5 x 2.5 x 1.5 cm - Thumbnail 
Formula
Fe2+Al2(PO4)2(OH)2 (RRUFF)
Locality
Hålsjöberg, Torsby, Värmland, Sweden
Tagged
phosphate

Dark blue crystal sugary grains in light blue Trolleite matrix with probable light blue, bladed, cleaved Kyanite. It is difiicult at best to discern the Scorzalite from Trolleite at least from this deposit. Both of these minerals are common at this deposit, a former aluminum mine. EDS is necessary to determine Trolleite from the Scorzalite.

At Hålsjöberg the phosphates occur in a metamorphic environment with Kyanite. Most other occurences are pegmatitic. Scorzalite form beautiful scendary crystals at Palermo. Scorzalite was originally found at Corrego Frio pegmatite. The second occurence was at the Victory mine near Custer, SD. Moore (Min. Record, 1973) classifies Scorzalite in a pegmatite as a metasomatic product of a primary phase.

Type Locality

Scorzalite

Formula
Fe2+Al2(PO4)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Granular, Massive - Granular 
Cleavage
Good, None, None 
Luster
Vitreous - Dull 
Color
dark blue, greenish blue 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
5.5-6 

Data courtesy of Webmineral.

Special Info
Type Locality

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