Unknown Clay - Fire (Refractory; MRDS - 10016652), Jefferson Co., Colorado, USA
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Deposit:: USGS COMMODITY FILE, GR. II - REEL 12, DOCKET 2688, 1946 AND REEL 13, DOCKET 2723
Deposit:: SHERIDAN & OTHERS, 1967, USGS P.P. 520, PL. 1
Deposit:: CONSV. DIV. COMP. DATE, 11,69
Commodities (Major) - Clay - Fire (Refractory)
Development Status: Producer
Host Rock Unit: Syenodiorite Porphyry
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