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0 item @ $0.00  

Helvite

#PD32437

Helvite

#PD32437
Availability
Sold
Price
$95.00
Size
3 x 2 x 3 cm - Thumbnail 
Reduced Price
$45.00
Formula
Mn4Be3(SiO4)3S (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States

Helvite according to Jenkins & Lorengo (Min. Record v. 33, n. 1 2002) is a rare mineral at Butte and was found in a single specimen from the Lexington mine. This specimen contains a single lemon yellow anhedral crystal grain in Rhodonite matrix.

Helvite

Formula
Mn4Be3(SiO4)3S 
Crystal System
Isometric 
Crystal Habit
Massive 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
brown, brownish yellow, gray, yellow, yellow green 
Streak
grayish white 
Class
Isometric - Hextetrahedral 
Fracture
Brittle 
Hardness
6-6.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Helvite
On Dakota Matrix
Other Available Helvite
WebMineral
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Mindat
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