Collection:
Juneau—Douglas City Museum
Object ID:
99.21.086 A—C
Accession#:
99.21
Credit Line:
Donated by Mary Ann Parke.
Object Name:
Ingot
Title:
Base & Precious Metal Ingots From Fire Assay Crucible
Date:
1920
Description:
A—C — Ingots from fire assay crucible. Ingot tarnished. Heft indicates high metal content. Sulfides of copper, lead and zinc(?) visible. Ingots likely also contains gold, silver and possibly molybenum by association. Secondary oxides on tarnished surface. Non—magnatic means no iron sulfides.
A — Bright colored — mostly coated with crucible material
B — Dark colored — least coating of crucible material
C — Intermediate colored (of 3 ingots)
A — Bright colored — mostly coated with crucible material
B — Dark colored — least coating of crucible material
C — Intermediate colored (of 3 ingots)
Notes:
From collected of Thomas S. Parke. Likely collected from assay remnants of abandoned mineral property in Juneau or Endicott area.
Additions made 02/06/01 — MAP
Ingot made in 35 to 40 gram crucible approximately 5 inches in height.
See doc reference for crucible in which ingots are made.
Additions made 02/06/01 — MAP
Ingot made in 35 to 40 gram crucible approximately 5 inches in height.
See doc reference for crucible in which ingots are made.
Search Terms:
Hardrock
Mine
Mill
Refining
Assaying
Mining
Mine
Mill
Refining
Assaying
Mining
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Base & Precious Metal Ingots F
Base & Precious Metal Ingots F
Base & Precious Metal Ingots F
Base & Precious Metal Ingots F