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Harding Mine (Harding pegmatite), Picuris District, Taos Co., New Mexico, USA

This page kindly sponsored by Taos Rockers
Latitude & Longitude (WGS84): 36° 11' 36'' North , 105° 47' 41'' West
Latitude & Longitude (decimal): 36.19333,-105.79472
Köppen climate type:Dfb : Warm-summer humid continental climate

A Be-Li mine in pegmatite located in the S½ sec. 29, T.23N., R.11E., in the western part of the Picuris Range, about 20 miles SW of Taos.

Mineralization is a tabular, zoned pegmatite dike in schist and quartzite.

Workings include a large open cut and underground workings.

Mineral List

65 valid minerals. 2 erroneous literature entries.

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

1600 - 2500 Ma

ID: 2879571
Paleoproterozoic metasedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Vadito Group

Description: Pelitic schist, quartz-muscovite schist, immature quartzite, and subordinate amphibolite; includes parts of Vadito Group in northern New Mexico, immature metasedimentary rocks of central New Mexico, and Bullard Peak Series mixed supracrustal rocks in Burro Mountains.

Lithology: Major:{pelitic schist,muscovite schist,quartzite}, Minor:{amphibolite}

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]

1600 - 1800 Ma

ID: 3185032
Paleoproterozoic sedimentary rocks

Age: Statherian (1600 - 1800 Ma)

Stratigraphic Name: Ortega Group

Lithology: Almandine amphibolite grade metasedimentary schist

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, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Meeves, H. et al. (1966): Reconnaissance of beryllium-bearing pegmatite deposits in six western states, U.S. Bureau of Mines Information Circular 8298: 31 (Table A-1).
Jahns, R. H. and Ewing, R. C. (1977): The Harding mine, Taos County, New Mexico. Mineralogical Record, 8 (2): 115-126.
Pough, Frederick H. () A Field Guide To Rocks And Minerals.

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