| | Report (volume) | Sapphirine in Precambrian Rocks Associated with Stratabound Sulfide Deposits, Custer County, Colorado...Associated with Stratabound Sulfide Deposits, Custer County, Colorado By WILLIAM H. RAYMOND, PETER A. LEIGGI...BULLETIN 1513 Mineralogic relationships between sapphirine and sulfide-bearing Precambrian rocks UNITED...William H. Sapphirine in Precambrian rocks associated with stratabound sulfide deposits, Custer County, Colorado...Supt. of Docs. no.: I 19.3:1513 1. Sapphirine-Colorado-Custer County. 2. Geology, Stratigraphic-Precambrian | | | Journal (article/letter/editorial) | METAMORPHOSED PROTEROZOIC BASE-METAL SULFIDE OCCURRENCES, COLORADO: A RE-EVALUATION OF GAHNITE COMPOSITION AS A GUIDE...metamorphosed to the amphibolite and granulite facies in Colorado, many of which are spatially associated with Mg-rich...the Wet Mountains (Marion and Amethyst prospects and an unnamed prospect) are depleted in Zn and enriched...gedrite, tremolite, forsterite, cummingtonite, sapphirine, cordierite, enstatite, and clinohumite. The...massive-sulfide deposits in Mg-rich alteration zones in Colorado, causes a marked enrichment in the spinel component |
|
Amethyst Prospect, Custer County, Colorado, USA