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Gabanta (Ashby; Colorado Central; Everett; Snow Drift; Silver Plume; Hall; Iris; Scott; Peru; Lebanon), Georgetown District, Clear Creek Co., Colorado, USA

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Latitude & Longitude (WGS84): 39° 42' 16'' North , 105° 43' 1'' West
Latitude & Longitude (decimal): 39.70444,-105.71694
Köppen climate type:Dfc : Subarctic climate


REF:Deposit:: USGS PP 63, 1908, PL. 1, 17
Deposit:: BLM CONNECTING SHEETS
Deposit:: CONSV. DIV. COMP. DATE, 6,63
Commodities (Major) - Silver, Zinc, Lead
Deposit Type: Vein
Development Status: Producer
Host Rock: Granite, Schist
Produced $8,000,000 in ore from 1872


Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

25 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Mesoproterozoic
1000 - 1600 Ma



ID: 3008003
Granitic rocks of 1400-m.y. age group

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Silver Plume Granite; Sherman Granite; Cripple Creek Granite; St. Kevin Granite; Vernal Mesa Granite; Curecanti Granite; Eolus Granite; Trimble Granite

Description: Includes Silver Plume, Sherman, Cripple Creek, St. Kevin, Vernal Mesa, Curecanti, Eolus, and Trimble Granites or Quartz Monzonites; also, San Isabel Granite of Boyer (1962) and unnamed granitic rocks

Lithology: Major:{alkali feldspar granite,granite}, Minor:{quartz monzonite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Mesoproterozoic
1000 - 1600 Ma



ID: 2209732
Silver Plume Granite

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Silver Plume Granite

Description: Gray to pinkish-gray, medium- to coarsegrained, equigranular, seriate, or porphyritic, massive to flow-foliated, biotite-muscovite peraluminous syenogranite and monzogranite. Porphyritic varieties contain tabular microcline phenocrysts. Locally includes muscovite-bearing pegmatite, alaskite, and aplite. Muscovite in equivalent rocks north of quadrangle is almost entirely subsolidus, indicating that it formed during retrograde crystallization (J.C. Cole, written commun., 2005). Rb-Sr whole-rock age is 1,409±40 Ma (Hedge, 1969); preliminary U-Pb zircon ages are 1,424±6 Ma (W.R. Premo, unpub. data, 2005) and 1,422 Ma (no error given; Graubard and Mattison, 1990)

Reference: Kellogg, K.S., Shroba, R.R., Bryant, Bruce, and Premo, W.R. Geologic Map of the Denver West 30' x 60' Quadrangle, North- Central Colorado. USGS Geologic Investigations Series 3000. [35]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186950
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region

USA
  • Colorado
    • Clear Creek Co.
      • Georgetown District
        • Gabanta (Ashby; Colorado Central; Everett; Snow Drift; Silver Plume; Hall; Iris; Scott; Peru; Lebanon)

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