Description
F. C. Schrader Usgs
Commodities
PrimaryPotassium, Aluminum, Gold, Silver
Commodity typeB
Deposit
Model150: Epithermal vein, Comstock
Deposit sizeM
Orebody formVEIN PINCH AND SWELL
Ore controlNw-Trending Fault; Ore Mainly On Hanging Wall Of Fault Zones Up To 50 Ft. Wide.
Materials
Ore mineralsAlunite, Gold, Silver
GangueKaolin, Quartz, Sericite
Geology
Host rockRhyolite
Associated rockVolcanic Rock (Aphanitic)
StructureNw-Trending Fault That Offsets Ash-Flow Tuff Sequence.
AlterationSilicification, Kaolinization, Alunitization; Argillized.
Economic & production
Development statusPast Producer
Discovery year1911
Identification
Deposit ID10009267
MRDS IDD002139
Alternate namesGolden Pen and Bovard 2? #M035733, Golden Pen Mine and Gold Pen #M233181
RegionNA
Data scoreB
Coordinates38.77964, -118.38013
References
SRC.REF: THOENEN, J. R., 1941 , USBM R. I. 3561 , P. 20ROSS, D. C., 1961 , GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA: NEV. BUREAU OF MINES BULL. 58 , P. 80 .SCHRADER, F. C., 1914 , ALUNITE AT BOVARD, NEV.: USGS BULL. 540 , P. 351 - 356 .THOENEN, J. R., 1941 , ALUNITE RESOURCES OF THE UNITED STATES: USBM R. I. 3561 , P. 19 - 20 .VANDERBERG, W. O., 1937 , RECONNAISSANCE OF MINING DISTRICTS IN MINERAL COUNTY NEV.: USBM I. C. 6941 , P. 57 - 58 .BLACK, J.W., 1920, UNPUBLISHED REPORT.1908 DIREXPL VARIOUS WORKS FOR GOLD1911 RECON F.C. SCHRADER: BULL. 5401940 RECON J. R. THOENEN: USBM R. I. 35611974 RECON R. B. HALL: PROF. PAPER 1076ASCHRADER, F. C., 1914 , USGS BULL. 540 , P. 353 ; THOENEN, J. R., 1941 , USBM R. I. 3561 , P. 20. ROSS, D.C., 1961, TABLE 6.1.