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De Maria Mine (Garbe Mine), Sage Hill, Michigan Bluff District (Michigan Bluff deposit), Placer Co., California, USAi
Regional Level Types
De Maria Mine (Garbe Mine)Mine
Sage HillHill
Michigan Bluff District (Michigan Bluff deposit)Mining District
Placer Co.County
CaliforniaState
USACountry

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Latitude & Longitude (WGS84): 39° 1' 25'' North , 120° 46' 33'' West
Latitude & Longitude (decimal): 39.02361,-120.77583
GeoHash:G#: 9qfn58j9p
USGS MRDS Record:10261540
Locality type:Mine
Köppen climate type:Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Foresthill1,483 (2011)3.7km
Georgetown2,367 (2011)14.1km
Colfax2,005 (2017)17.5km
Auburn Lake Trails3,426 (2011)19.5km
Alta610 (2011)20.6km


A lode Au occurrence/mine located in sec. 29 & in the SE¼ sec. 30, T14N, R11E, MDM, about 2.2 km SW of Sage Hill and about 8 km (4.8 miles) ENE of Foresthill, along Ladys Canyon, on French Meadow Road, on private land. This is the oldest mine and lowest mine on a five level deposit of crystallised gold. Also on this deposit is the Eagle's Nest Mine. Owned & operated by John Demaria, California (1990). C. J. De Maria and Mr. Garbe of Spring Valley owners in (1915). MRDS database stated accuracy for this location is 100 meters.

Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).

Workings include unspecified underground openings.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Gold
Formula: Au
Habit: Small sharp octos to a cm, dendritic, wires and plates to many cm.
Colour: gold
Fluorescence: none
Description: Extremely rich specimens of well crystallized gold in Quartz
Reference: Waring, Clarence (1917) Mines and Mineral Resources of the Counties of El Dorado, Placer, Sacramento, Yuba. State Mineralogists Report 1915-1916.
Quartz
Formula: SiO2
Reference: Waring, Clarence (1917) Mines and Mineral Resources of the Counties of El Dorado, Placer, Sacramento, Yuba. State Mineralogists Report 1915-1916.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2

List of minerals for each chemical element

OOxygen
O QuartzSiO2
SiSilicon
Si QuartzSiO2
AuGold
Au GoldAu

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

Jurassic - Triassic
145 - 251.902 Ma



ID: 3189515
Mesozoic sedimentary and volcanic rocks

Age: Mesozoic (145 - 251.902 Ma)

Lithology: Mudstone-carbonate-sandstone-conglomerate

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]

Triassic - Ordovician
201.3 - 485.4 Ma



ID: 2902487
Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada)

Age: Phanerozoic (201.3 - 485.4 Ma)

Stratigraphic Name: Calaveras Complex; Shoo Fly Complex; Blue Canyon Formation; Briceburg Formation; Cape Horn Slate; Delhi Formation; Hite Cove Formation; Kanaka Formation; Relief Quartzite; Tightner Formation

Description: Undivided Paleozoic metasedimentary rocks. Includes slate, sandstone, shale, chert, conglomerate, limestone, dolomite, marble, phyllite, schist, hornfels, and quartzite

Comments: Western Sierra Nevada. Lower Paleozoic Shoo Fly Complex and upper Paleozoic to lower Mesozoic Calaveras Complex, undivided. Deformed and metamorphosed rocks composed primarily of quartzite, argillite, and chert; includes melange Original map source: Saucedo, G.J., Bedford, D.R., Raines, G.L., Miller, R.J., and Wentworth, C.M., 2000, GIS Data for the Geologic Map of California, California Department of Conservation, Division of Mines and Geology, CD-ROM 2000-07, scale 1:750,000.

Lithology: Major:{argillite,quartzite,phyllite}, Minor:{mudstone,sandstone,chert}, Incidental:{schist, marble, conglomerate, sedimentary breccia, limestone, basalt}

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]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lindgren, Waldemar & Henry Ward Turner (1894), Description of the gold belt, California; description of the Placerville sheet: USGS Geol. Atlas, Placerville folio (Folio No. 3) 3 pp.; […(abstract): Jour. Geol.: 4: 248-250 (1896)].
Waring, Clarence A. (1917), Placer County: Report 15 of the State Mineralogist, California State Mining Bureau (Report 15): 15: 338.
Waring, Clarence (1917) Mines and Mineral Resources of the Counties of El Dorado, Placer, Sacramento, Yuba. State Mineralogists Report 1915-1916.
Logan, Clarence August (1936), Gold Mines of Placer County: California Journal of Mines and Geology, California Division Mines (Report 32): 32(1): 44.
Mine Safety and Health Administration (MSHA) (1980), report (December, 1980)
California Division of Mines and Geology (1990), Mines and mineral producers active in California (1988-89), California Department of Conservation, Division of Mines and Geology, Special Publication 103.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10261540.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060610892.


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