Montana · Madison County
Occurrence
Montana Onyx Quarries
Madison County, Montana, United States
Stone
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USGS source ↗
Commodities
Primary
Stone
Commodity type
N
Deposit
Deposit size
N
Materials
Ore minerals
Onyx
Geology
Host rock
Tuff · Tuffaceous Rocks
Economic & production
Development status
Occurrence
Identification
Deposit ID
10091641
MRDS ID
DC09063
Region
NA
Data score
D
Coordinates
45.07962, -112.34281
References
MONT. B.M. AND GEOL. MEM. 15, 1935, P. 52.CONSV. DIV. COMP. DATE, 05-24-1963