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Bastnäsite-(Ce) from
Mountain Pass Mine (Mountain Pass deposit; Mountain Pass Mine and mill; Bastnaesite deposit; Bastnäsite deposit; Mountain Pass carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA

Locality type:Mine
Classification
Species:Bastnäsite-(Ce)
Formula:Ce(CO3)F
Comments:Occurs in relative abundance, largely in dolomite breccias associated with syenite intrusives along an extensive zone. Tabular crystals to 10 cm long and small hexagonal prisms.
Confirmation
Validity:Believed Valid
References
References:Anonymous (1950), Rare earth deposits found in California: California Division of Mines, Mineral Information Service: 3(1): 1; Anonymous (1950), New products: Mineral Notes & News No. 158: 1-18; Olson, Jerry Chipman & William N. Sharp (1951), Geologic setting of the Mountain Pass bastnaesite deposits, San Bernardino County, California: abstract): Geological Society of America Bulletin: 62: 1467; Pray, Lloyd Charles & William N. Sharp (1951), Bastnaesite discovered near Mountain Pass, California: (abstract): Geological Society of America Bulletin: 62: 1519; Olson, Jerry Chipman, Shawe, D.R., Pray, L.C., Sharpe, W.N., and Hewlett, D.F. (1954), Geology of the rare-earth deposits of the Mountain Pass district, San Bernardino County California, USGS 261 pp.: 34, 38; Glass, Jewell Jeannette, H.T. Evans, Jr., M.K. Carron & Harry Rose, Jr. (1956), Cerite from Mountain Pass, San Bernardino County, California: American Mineralogist: 41: 665; Glass, Jewell Jeannette, H.T. Evans, Jr., M.K. Carron & F.A. Hildebrand (1958), Cerite from Mountain Pass, San Bernardino County, California: American Mineralogist: 43: 460-480; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 222; Haxel, G. (2005) Ultrapotassic rocks, carbonatite and rare earth element deposit, Mountain Pass, southern California. In: Geology and Mineral Resources of the Mojava National Preserve, southern California. USGS Bulletin 2160.
Associated Minerals:
Associates:Cerite-(Ce)
Data
Mineral Data:Click here to view Bastnäsite-(Ce) data
Locality Data:Click here to view Mountain Pass Mine (Mountain Pass deposit; Mountain Pass Mine and mill; Bastnaesite deposit; Bastnäsite deposit; Mountain Pass carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA
Localities for Bastnäsite-(Ce) in this Region
Birthday Mine (Birthday claim; Birthday area), Mountain Pass Mine (Mountain Pass deposit; Mountain Pass Mine and mill; Bastnaesite deposit; Bastnäsite deposit; Mountain Pass carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA
Nearest other occurrences of Bastnäsite-(Ce)
33.9km (21.1 miles) A Crescent District, New York Mts, Clark Co., Nevada, USA
135.5km (84.2 miles) B Kingman Feldspar Mine (Kingman group of claims; Kingman Feldspar Quarry; Kingman Feldspar Quarries), Kingman area, Wallapai District, Cerbat Mts (Cerbat Range), Mohave Co., Arizona, USA
Mineral and/or Locality  
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