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Phengite from
Idaho-Maryland Mine (Idaho Maryland prospect; Maryland Mine; Howard Hill/Morning Dew; Idaho Maryland-Brunswick), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA


Locality type:Mine
Classification
Species:Muscovite var: Phengite
Formula:KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Phengite data
Locality Data:Click here to view Idaho-Maryland Mine (Idaho Maryland prospect; Maryland Mine; Howard Hill/Morning Dew; Idaho Maryland-Brunswick), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1035802
Long-form Identifier:1:3:1035802:1
GUID (UUID V4):0
Nearest other occurrences of Phengite
0.2km (0.1 miles) ⓘGolden Gate group (Golden Gate Gp; Kentucky & Alpha; Golden Gate; Golden Gate East and West; Dana claim; Christopher Columbus claim; Golden Gate claim; Alpha claim; Ismert Ranch claim), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
24.4km (15.1 miles) ⓘRed Ledge Mine, Washington, Washington Mining District (Omega Mining District), Nevada County, California, USA
27.0km (16.8 miles) ⓘRed Ledge Mine (Bank Mining Company), Mack House, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
30.3km (18.8 miles) ⓘIrelan Mine (Ireland Mine), Minnesota Flat, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
31.2km (19.4 miles) ⓘRainbow 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
31.6km (19.7 miles) ⓘ16 to 1 Mine (Sixteen-to-One Mine; Original Sixteen-to-One Mine), Alleghany, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
32.0km (19.9 miles) ⓘPanama Mine, Chips Flat, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
32.0km (19.9 miles) ⓘPlumbago Mine (Marion Mine; Croesus Mine; Standard Extension Mine; Crafts Clute Mine; Enterprise Mine; Hope Mine; Gold Beater Mine), Plumbago, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
32.1km (19.9 miles) ⓘMorning Glory Mine, Alleghany, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
32.1km (20.0 miles) ⓘTightner Mine (Tightner Mines), 16 to 1 Mine (Sixteen-to-One Mine; Original Sixteen-to-One Mine), Alleghany, Alleghany Mining District (Forest Mining District), Sierra County, California, USA
References
Lindgren, Waldemar (1896a), The gold-quartz veins of Nevada City and Grass Valley districts, California: USGS 17th. Annual Report, part 2: 115
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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