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Dawsonite from
Oriental Mine (Alta Mine), 16 to 1 Mine (Sixteen-to-One Mine; Original Sixteen-to-One Mine), Alleghany, Alleghany Mining District (Forest Mining District), Sierra County, California, USA


Locality type:Mine
Classification
Species:Dawsonite
Formula:NaAlCO3(OH)2
Comments:Occurs as clusters of minute fibers as daughter products in fluid inclusions of gold-quartz veins. Individual crystals 5-20 microns long and 1 to 3 microns thick, although some as large as 200 x 5 microns noted.
Habit:Fibrous
Colour:Pale green or tan tint
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Quartz
Data
Mineral Data:Click here to view Dawsonite data
Locality Data:Click here to view Oriental Mine (Alta Mine), 16 to 1 Mine (Sixteen-to-One Mine; Original Sixteen-to-One Mine), Alleghany, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
Data Identifiers
Mindat Occurrence Record ID:644095
Long-form Identifier:1:3:644095:4
GUID (UUID V4):e81b08d9-16af-46ae-a509-4fec0b970e55
References
Reference Search (possible matching items)
Coveney, Raymond M. (1981) Gold quartz veins and auriferous granite at the Oriental Mine, Alleghany District, California. Economic Geology, 76 (8) 2176-2199 doi:10.2113/gsecongeo.76.8.2176
Journal (article/letter/editorial)
and AuriferousGranite at the Oriental Mine, AlleghanyDistrict, California RAYMONDM. COVENEY,JR. Department...the three fissureveins at the Oriental mine, Alleghanydistrict,California,containsmallhigh-gradeore sh...yingfractures, chiefly in the footwall of the Oriental vein. Chemical analysessuggestthat desilicationof...ntsof silicato form the vein quartz at the Oriental mine. Beyond the fringesof the main alterationenvelopesis...however,Fergusonand Gannett(19(32)rate the Oriental mine as first ($400/ft vs. $250/ft for the larger
 
Mineral and/or Locality  
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