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J.A. Mars Assayer - Ore for Assay Receipt, rec'd from H.C. Egerton [163556]

Currency:USD Category:Collectibles / Mining Start Price:200.00 USD Estimated At:400.00 - 800.00 USD
J.A. Mars Assayer - Ore for Assay Receipt, rec'd from H.C. Egerton [163556]
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J.A. Mars California Assay Office, 512 California Street, San Francisco Oct. 24, 1872 - Letterhead to H.C. Egerton - Describes a sample of magnetic iron ore that the latter submitted for analysis. Contained over 70% of Iron sesquioxide (Fe2O3) and 11% Iron Protoxide (FeO). Size: 8 x 10.5 inches.

Date: 1872
Country (if not USA):
State: California
City: San Francisco
Provenance: