Latitude: 41°45'41"N
Longitude: 121°22'39"W
A volcanic cinders/pumice occurrence/pit operation located in the NW¼NE¼, sec. 10, T45N, R5E, MDM, 1.2 km (3,800 feet) NNE of Twin Sister (summit), on National Forest land. MRDS database stated accuracy for this location is 100 meters. MRDS NOTE: Latitude-longitude values calculated from township, range, section.
Local rocks include recent (Holocene) volcanic flow rocks, unit 1 (Cascade Volcanic Field).
References
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10140008 & 10031381.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060490009.
Mineral List
1 entry listed.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please
register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
Mineral and Locality Search
