Metallurgical Sample Appraisals

Metallic Mineral or Slag Fragment

Copper Ore Sample

Metallurgy of Lead by H. O. Hofman

Red Textured Surface

Unclassified Mineral Sample

Metallic Mineral Sample (Possibly Antimony or Bismuth)

Unidentified Rock or Mineral Sample

Granite Rock Sample

Granite Sample

Reddish Rock Sample

Unidentified Granular Rock Sample

Quartz Crystal Sample

Small Rock

Unidentified Rock Specimen

Industrial Slag or Furnace Waste

Unidentified Rock Fragment

Rock Fragment

Reddish-Brown Mineral Fragment

Unidentified Metamorphic Rock Specimen

Antique Cast Iron Salesman Sample Stove

Unidentified Organic/Mineral Specimen

John T. Plass Band Saw Patent/Award Medal

Fossilized Rock

Meteoritic Rock

Mineral Specimen

Basalt Pebble

Unidentified Rock

Rough Natural Stone

Small Stone

Fossilized Rock Fragment

White Mineral Specimen

Small Rock Specimen

Scoria (Lava Rock)

Raw Mineral Specimen

Unidentified Mineral Specimen (Possibly Quartz)

Lunar Meteorite

Rough Mineral Specimen

Botryoidal Agate Specimen

Ney R8 Dental Alloy Ingot/Bar

Granite Rock