mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Hedenbergite - gold ore

#49107

Hedenbergite - gold ore

#49107
Availability
Sold
Size
15 x 11 x 11 cm - Cabinet 
Formula
CaFe2+Si2O6 (RRUFF)
Locality
Silver Star, Madison Co., Montana, United States
Tagged
ore specimen

The Silver Star was a gold mine in Madison county, which was the second largest gold district in Montana. The deposit was located at the far south end of the Boulder Batholith. Apparently, at least, some of the gold ore was hosted in Hedenbergite. This specimen, was collected by the late Chris van Laer.  This Hedenbergite contains divergent bladed crystals to 8cm. Excellent specimen of good gold ore. 

Hedenbergite

Formula
CaFe2+Si2O6 
Crystal System
Monoclinic 
Crystal Habit
Granular, Crystalline - Fine, Lamellar 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Pearly 
Color
brownish green, gray green, grayish black, dark green, black 
Streak
white green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6 

Data courtesy of Webmineral.

Collection
Chris van Laer Collection

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2024 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map