Montana · Ravalli County
Occurrence
Hamilton Vermiculite Deposit
Ravalli County, Montana, United States
Vermiculite
⌖ Show on map
USGS source ↗
Description
S. H. (Swift) Chamberlain
Commodities
Primary
Vermiculite
Commodity type
N
Deposit
Deposit size
N
Orebody form
IRREGULAR
Ore control
Alteration Of Pyroxenite
Materials
Gangue
Magnetite, Sphene
Geology
Host rock
Pyroxenite · Newland Formation
Economic & production
Development status
Occurrence
Discovery year
1930
Identification
Deposit ID
10078303
MRDS ID
W026572
Region
NA
Data score
C
Coordinates
46.26183, -113.88927
References
PERRY, E. S., 1948 , TALC, GRAPHITE, VERMICULITE AND ASBESTOS IN MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 27 , P. 28 - 30