Mine detail: Sawyer Mine

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Location: Randolph County, North Carolina, United States, North America
Lat / long: 35.78926, -79.91645
dep_id: 10026505
mrds_id: K005182
Commodity type: metallic
Major mineral: Gold
Minor mineral: Silver
Trace mineral: Copper, Lead, Zinc
Operation type: Unknown
Deposit type: Hot Spring
Production size: Small ammount of material produced
Development status: Past Producer
ore: Galena, Gold, Pyrite, Sphalerite
gangue: Chlorite, Quartz, Sericite
orebody_fm: TABULAR
work_type: Surface/Underground
model: 104: Hot-spring Au-Ag
alteration: Muscovite, Chlorite, Silica
conc_proc: First Generation Metal Introduction May Have Been During The Development Of The Nearby Caraway-Back Creek Mountain Felsic Volcanic Center In Epithermal-Hot Spring Hydrothermal Centers. Tectonic Disruption Of Early Metal Deposits And/Or Renewed Hydrothermal Activity During Metamorphism May Have Played A Minor Role In Forming The Present Deposit.
ore_ctrl: Disrupted, Pre-Tectonic Quartz Veins And Disseminated Sulfide Accumulations. Some Redistribution Or Introduction Of Metals During Metamorphism May Have Occurred.
Reporter: Mcdaniel, Ronald D., Klein, T.L.
hrock_unit: Tillery Formation
hrock_type: Rhyolite
arock_unit: Tillery Formation
arock_type: Tuff
Structure: Ne-Trending Open To Tight West-Verging Folds., Ne Striking, N-Plunging Small-Scale Folds Indicate A Left Lateral Sense Of Shear Within The Highly Altered Rocks. Early Ne-Trending Faults May Have Been Associated With The Development Of The Nearby Rhyolitic Volcanic Center And Provided The Locus For Precious-Metal Deposits. Early Ne Tren
yfp_ba: <
Year first produced: 1850
yr_lst_prd: 1906
dy_ba: <
disc_yr: 1850
References:
  • Analytical Data:: KLEIN, UNPUBLISHED DATA; LUTTRELL, 1978, USGS OPEN-FILE REPORT 78-152.
  • Deposit:: CARPENTER, P. A., III, 1976, METALLIC MINERAL DEPOSITS OF THE CAROLINA SLATE BELT, NORTH CAROLINA: NORTH CAROLINA MINERAL RESOURCES SEC. BULL. 84, 166 P.
  • Deposit:: PARDEE, J. T., AND PARK, C. F., JR., 1948, GOLD DEPOSITS OF THE SOUTERN PIEDMONT: U.S. GEOLOGICAL SURVEY PROF. PAPER 213, 156 P.
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