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1 item @ $25.00   30:00
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Andalusite

#56289
SOLD
Andalusite from Hill City, Pennington Co., South Dakota, United States - 56289
Andalusite from Hill City, Pennington Co., South Dakota, United States - 56289

Andalusite

#56289
Availability
Sold
Size
10 x 7 x 6 cm - Cabinet 
Formula
Al2OSiO4 (RRUFF)
Locality
Hill City, Pennington Co., South Dakota, United States

Cabinet specimen of purplish pink Andalustite showing several prismatic crystals, the largest to 4cm long and 2cm wide. None of the crystals are terminated.

Andalusite

Formula
Al2OSiO4 
Crystal System
Orthorhombic 
Crystal Habit
Blocky, Prismatic, Euhedral Crystals 
Cleavage
Distinct, Indistinct, Poor 
Luster
Vitreous (Glassy) 
Color
dark green, gray, brown, red, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Splintery 
Hardness
6.5-7 

Data courtesy of Webmineral.

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