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McKinley Co., New Mexico, USA
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Excerpts from "Historical review of uranium production from the Todilto Limestone, Cibola and McKinley Counties, New Mexico" - 1985 -

by William L. Chenoweth, Consulting Geologist, Grand Junction, CO 81506

Introduction (excerpt)
The Grants area of New Mexico is well known for its large resources of uranium that occur in sandstone beds of the Morrison Formation of Late Jurassic age. The area is also one of the few localities in the United States where economic deposits of uranium occur in limestone beds. During the period 1950 through 1981, mines on 31 different sections of land in the Grants area produced 3,335.75 tons of uranium oxide from the Jurassic Todilto Limestone. This represents slightly more than 2% of the total uranium that has been mined in the Grants area. The Todilto has been the most productive limestone host rock for uranium in the United States, if not the entire non-communist world.

Production History (excerpt)
Although yellow uranium minerals had been known to exist in the Grants area for several years, it was the discovery by Paddy Martinez, a Navajo sheepherder, that triggered the uranium boom. In the spring of 1950, Martinez collected samples of Todilto Limestone from the foot of Haystack Butte that contained yellow uranium minerals. He showed the samples to Carrol Gunderson, a Grants merchant and, at the time, mayor. Gunderson contacted E. O. Hemenwav, Land Commissioner for the Santa Fe Pacific Railroad Company, who controlled the mineral rights on Sec. 19, T13N, R10W, where the samples originated.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Actinolite
Aegirine
Albite
var: Andesine

'Albite-Anorthite Series'
Alunogen
Analcime
Anatase
Andersonite
Antigorite
'Apatite'
Augite
Autunite
Barnesite
Baryte
Bayleyite
Beidellite
β-Uranophane
'Biotite'
Brookite
Calcite
Carnotite
Chalcopyrite
Chamosite
'Chert'
'Chlorite Group'
Clinohumite
var: Titanclinohumite

Coffinite
Corvusite
Cryptomelane
Cuprosklodowskite
Curite
Diopside
var: Chromian Diopside
Dolomite
Doloresite
Enstatite
Epidote
Epsomite
Ferroselite
Fluorite
Forsterite
Galena
'Garnet'
Goethite
Grantsite
'Gummite'
Gypsum
var: Selenite
Häggite
'Halloysite'
Halotrichite
Hematite
Hewettite
'Hornblende'
Ilmenite
'Ilsemannite'
Jarosite
Johannite
Jordisite
Kaolinite
'K Feldspar
var: Adularia'

Lepidocrocite
Leucite
'Leucoxene'
Liebigite
'Limonite'
Magnetite
Malachite
Marcasite
Melanterite
Meta-autunite
Metahewettite
Metatyuyamunite (TL)
Microcline
Molybdenite
Montmorillonite
Montroseite
Muscovite
var: Illite
Natrozippeite
Nepheline
Nontronite
Nováčekite-I
'Olivine'
Opal
Paramontroseite
Pascoite
'Perthite'
'Petrified Wood'
Prehnite
'Psilomelane'
Pyrite
Pyrolusite
Pyrope
Pyrophyllite
'Pyroxene Group'
Quartz
var: Amethyst
Rabejacite
'Rauvite'
Roscoelite
Rutherfordine
Rutile
Sanidine
Santafeite (TL)
Schröckingerite
Selenium
Sepiolite
'Serpentine Group'
Sklodowskite
Spinel
Stibnite
Sulphur
Talc
Thénardite
Thermonatrite
Todorokite
Topaz
'Tourmaline'
Trona
Tyuyamunite
Uraninite
var: Pitchblende
Uranophane
Uranopilite
'Wad'
Weeksite
Wollastonite
Zellerite
Zippeite
Zircon


136 entries listed. 102 valid minerals. 2 type localities (valid minerals).

Localities in this Region

USA
USA

The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Northrop (1996), Minerals of New Mexico, 3rd revised edition.

External Links


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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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