Mine detail: Twenty - One and Twenty - Seven Fluorspar Mines

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Location:	Cibola County, New Mexico, United States, North America
Lat / long:	34.97589, -107.98506
dep_id:	10069412
mrds_id:	W006931
Commodity type:	nonmetallic
Major mineral:	Fluorine-Fluorite
Trace mineral:	Quartz, Calcium
Operation type:	Unknown
Production size:	Production occurred
Development status:	Producer
orebody_fm:	LINEAR
ore_ctrl:	Fault Zone - The Distribution Of The Ore Bodies Along The Veins Seems To Be Controlled Chiefly By Abrupt Changes In Strike. In The Veins Of Northeasterly Trend, Where The Southeast Wall Has Moved Southwest, The More Easterly - Trending Parts Of The Vein Fissures Tend To Be More Open Than The Rest Of The Vein And These Parts Generally Contain The Principal Ore Bodies. The More Northeasterly Trending Parts Of These Veins Are Relatively Narrow And Of Low Grade.
Reporter:	Schruben, Paul G., Menzie, David
hrock_type:	Gneiss
arock_unit:	Gneissic Granite;Dikes-Monzonite, Diorite, Hornblendite Etc
arock_type:	Diorite,Hornblendite,Gneiss,Granite
Structure:	Zuni Mountains To The Northwest, Strong Northwest Trending Faults - The 21 And 27 Faults Are In Direct Contact With These Faults. The General Structure Of The District Is That Of An Elongate Dome Of Precambrian Rocks Surrounded By Gently Outward - Dipping Permian Sedimentary Rocks. Faults Partly Bound The Precambrian Area, And Near These Faults The Permian Rocks Have Been Dragged So That They Dip Steeply, And In Places Are Overturned.
tectonic:	Colorado Plateau
Year first produced:	1918
References:	Deposit:: ROTHROCK, H. E., JOHNSON, C. H., AND HAHN, A. D., 1946, FLUORSPAR RESOURCES OF NEW MEXICO: N. MEXICO BUREAU OF MINES AND MIN. RES. BULL. 21 P. 187 - 190 & 207 - 212 Deposit:: WILLIAMS, F. E., 1966, FLUORSPAR DEPOSITS OF NEW MEXICO: U. S. BUREAU OF MINES INFO. CIRC. 8307 P. 138 - 140 Deposit:: GODDARD, E. N., 1966, GEOLOGIC MAP AND SECTIONS OF THE ZUNI MOUNTAINS FLUORSPAR DISTRICT, VALENCIA CO., NEW MEXICO: MISC. GEOL. INVEST. MAP I-454 Deposit:: WEISSENBORN, A. E., 1944, ORE RESERVES AT THE NAVAJO FLUORSPAR MINES NEAR GRANTS, VALENCIA COUNTY, NEW MEXICO: USGS OPEN FILE REPORT NO. 1517 Deposit:: GODDARD, E.N., 1952, STRUCTURAL CONTROL OF FLUORSPAR DEPOSITS IN THE ZUNI MOUNTAINS, VALENCIA, COUNTY, NEW MEXICO: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 125. Deposit:: 1952 GEOLMAP GODDARD, E.N Production:: ROTHROCK, H. E., 1946, F. RES. OF N. MEXICO. WILLIAMS F. E., 1966, F. DEP. N. MEXICO. GODDARD, E. N., 1966, GEOL. ZUNI MTNS. Reserve-Resource:: WEISSENBORN, A. E., 1944, ORE RESERVES AT NAVAJO F. MINES NEAR GRANTS, VALENCIA CO. N. MEXICO