Collection:
Juneau—Douglas City Museum
Object ID:
2007.22.033A—C
Accession#:
2007.22
Credit Line:
Transferred from the U.S. Bureau of Land Management.
Object Name:
Crucible
Title:
Small Platinum Crucible
Year Range from:
1950
Year Range to:
1996
Description:
Small Crucible
A: Crucible (metal)
Short hollow metal column. Tapers at bottom. Fits inside Crucible holder bottom.
B: Crucible holder (bottom)
Round wooden column. With solid base, but no top. From top down about two—thirds of the center is hollowed out. Tapers at bottom of center. On bottom says: USBM / 20580 (carved into wood and covered in red color).
C: Crucible holder (top)
Round wooden top for crucible holder bottom. Top is wider then bottom. Bottom tappers to fit into the metal crucible. Fits into crucible holder bottom.
A: Crucible (metal)
Short hollow metal column. Tapers at bottom. Fits inside Crucible holder bottom.
B: Crucible holder (bottom)
Round wooden column. With solid base, but no top. From top down about two—thirds of the center is hollowed out. Tapers at bottom of center. On bottom says: USBM / 20580 (carved into wood and covered in red color).
C: Crucible holder (top)
Round wooden top for crucible holder bottom. Top is wider then bottom. Bottom tappers to fit into the metal crucible. Fits into crucible holder bottom.
Notes:
Used for high temperature chemical analysis because platinum doesn't react with many other naturally occurring mineral specimens. It has a high melting point and is non—reactive.
The wooden case is said to hold crucible when not in use, it also serves to help the platinum retains its shape.
The wooden case is said to hold crucible when not in use, it also serves to help the platinum retains its shape.
Search Terms:
Mining
JUNK
T&E
Assaying
JUNK
T&E
Assaying
Click to Enlarge
2007.22.033A
2007.22.033B
2007.22.033C
2007.22.033A
2007.22.033B
2007.22.033C