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Modoc Mine, Modoc District, Doña Ana Co., New Mexico, USAi
Regional Level Types
Modoc MineMine
Modoc DistrictMining District
Doña Ana Co.County
New MexicoState
USACountry

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Key
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Latitude & Longitude (WGS84):
32° 20' 38'' North , 106° 34' 48'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Organ323 (2011)9.2km
White Sands1,651 (2017)10.3km
University Park4,192 (2011)17.6km
Las Cruces101,643 (2018)19.0km
San Pablo806 (2011)20.9km


Exploited a replacement body in the southern Organ Mountains for silver-bearing galena.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: NMBMMR Bull 11 The Geology of the Organ Mountains
Aragonite
Formula: CaCO3
Reference: No reference listed
Calcite
Formula: CaCO3
Reference: No reference listed
Chalcopyrite
Formula: CuFeS2
Reference: No reference listed
'Chlorite Group'
Reference: NMBMMR Bull 11 The Geology of the Organ Mountains
Corundum
Formula: Al2O3
Reference: Minerals of New Mexico 3rd ed.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: NMBMMR Bull 11 The Geology of the Organ Mountains
Galena
Formula: PbS
Reference: NMBMMR Bull 11 The Geology of the Organ Mountains
Pyrite
Formula: FeS2
Reference: USGS Prof Paper 68 The Ore Deposits of New Mexico
Quartz
Formula: SiO2
Reference: NMBMMR Bull 11 The Geology of the Organ Mountains
Siderite
Formula: FeCO3
Reference: Minerals of New Mexico 3rd ed.
Silver
Formula: Ag
Reference: No reference listed
Sphalerite
Formula: ZnS
Reference: USGS Prof Paper 68 The Ore Deposits of New Mexico

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 9 - Silicates
Andradite9.AD.25Ca3Fe3+2(SiO4)3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
C SideriteFeCO3
OOxygen
O AndraditeCa3Fe23+(SiO4)3
O CalciteCaCO3
O AragoniteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O CorundumAl2O3
O SideriteFeCO3
O QuartzSiO2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al CorundumAl2O3
SiSilicon
Si AndraditeCa3Fe23+(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
SSulfur
S GalenaPbS
S ChalcopyriteCuFeS2
S PyriteFeS2
S SphaleriteZnS
CaCalcium
Ca AndraditeCa3Fe23+(SiO4)3
Ca CalciteCaCO3
Ca AragoniteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe ChalcopyriteCuFeS2
Fe AndraditeCa3Fe23+(SiO4)3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe SideriteFeCO3
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AgSilver
Ag SilverAg
PbLead
Pb GalenaPbS

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

Rupelian - Lutetian
28.1 - 47.8 Ma



ID: 2848594
Lower middle Tertiary andesitic to dacitic lavas and pyroclastic flow breccias

Age: Paleogene (28.1 - 47.8 Ma)

Description: Includes Rubio Peak Formation, Orejon Andesite, andesite of Dry Leggett Canyon, andesite of Telephone Canyon, and other units in southwestern, central, and northern New Mexico. Locally includes minor mafic lavas. Ancient landslide blocks of Mader Limestone, as much as one mile long, occur within Rubio Peak lavas in the central Black Range, west of Winston.

Comments: Original map source: Green, G.N., Jones, G.E., and Anderson, O.J., 1997, The Digital Geologic Map of New Mexico in ARC/INFO Format: U.S. Geological Survey Open-File Report 97-0052, 9 p., scale 1:500,000.

Lithology: Major:{andesite,latite}, Minor:{limestone,conglomerate}

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]

Permian
251.902 - 298.9 Ma



ID: 3187209
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 298.9 Ma)

Lithology: Carbonate

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

USGS MRDS Record:10013000
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