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Florence group, Contact District, Elko Co., Nevada, USAi
Regional Level Types
Florence group- not defined -
Contact DistrictMining District
Elko Co.County
NevadaState
USACountry

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Latitude & Longitude (WGS84): 41° 45' 24'' North , 114° 48' 57'' West
Latitude & Longitude (decimal): 41.75685,-114.81589
GeoHash:G#: 9rqme39e7
USGS MRDS Record:10045978
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Jackpot1,195 (2011)27.7km


Structure: Granodiorite Stock With Assoc. Faults, Fractures

Alteration: Some Oxidation

Deposit: Veins in, or close to, alaskite dikes consists of shallow shafts exposing several veins most of which are in or close to alaskite dikes. Area is within the granodiorite mass between contact and the west contact area (schrader, 1935, p 36-7) group consists of 12 claims. The florence claims nos. 13 and 16 are described in further detail (schrader, 1912, p 132-3) ; info.src : 1 pub lit

Deposit type: Polymetallic veins

Development: 12 claims.

Ore(s): Faults, Fractures, Intrusive Dikes & Veins

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


8 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!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Azurite
Formula: Cu3(CO3)2(OH)2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Bornite
Formula: Cu5FeS4
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcopyrite
Formula: CuFeS2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: NBMG Open File Report 79-3
Hematite
Formula: Fe2O3
Reference: NBMG Open File Report 79-3
Malachite
Formula: Cu2(CO3)(OH)2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Molybdenite
Formula: MoS2
Reference: NBMG Open File Report 79-3
Quartz
Formula: SiO2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Molybdenite2.EA.30MoS2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
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

HHydrogen
H MalachiteCu2(CO3)(OH)2
H AzuriteCu3(CO3)2(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
CCarbon
C MalachiteCu2(CO3)(OH)2
C AzuriteCu3(CO3)2(OH)2
OOxygen
O MalachiteCu2(CO3)(OH)2
O AzuriteCu3(CO3)2(OH)2
O HematiteFe2O3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O QuartzSiO2
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si QuartzSiO2
SSulfur
S ChalcopyriteCuFeS2
S BorniteCu5FeS4
S MolybdeniteMoS2
FeIron
Fe ChalcopyriteCuFeS2
Fe BorniteCu5FeS4
Fe HematiteFe2O3
CuCopper
Cu ChalcopyriteCuFeS2
Cu BorniteCu5FeS4
Cu MalachiteCu2(CO3)(OH)2
Cu AzuriteCu3(CO3)2(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
MoMolybdenum
Mo MolybdeniteMoS2

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

Quaternary - Miocene
0 - 23.03 Ma



ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 Ma)

Lithology: Sedimentary rocks

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]

Jurassic
145 - 201.3 Ma



ID: 2795097
Older felsic phaneritic intrusive rocks

Age: Jurassic (145 - 201.3 Ma)

Description: Concentrated in two areas of the State; common in the west-central part of the State along the California border in Mineral, Esmeralda, Lyon, Douglas, and Carson Counties. There is another more widely scattered group in eastern and central Nevada in Elko, Eureka, and White Pine Counties. Scattered occurrences also are present in Humboldt, Churchill, Lander, and Pershing Counties. Compositions are mainly granitic, granodiorite, and quartz monzonite.

Comments: Original map source: Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000.

Lithology: Major:{granitic,granodiorite,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]

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


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