Metallurgical Sample Appraisals

Metallic Mineral or Slag Fragment

Copper Ore Sample

Metallurgy of Lead by H. O. Hofman

Unclassified Mineral Sample

Granite Rock Sample

Unidentified Rock or Mineral Sample

Granite Sample

Reddish Rock Sample

Unidentified Granular Rock Sample

Quartz Crystal Sample

Small Rock

Unidentified Rock Specimen

Reddish-Brown Mineral Fragment

Unidentified Rock Fragment

Rock Fragment

Antique Cast Iron Salesman Sample Stove

Unidentified Metamorphic Rock Specimen

John T. Plass Band Saw Patent/Award Medal

Fossilized Rock

Meteoritic Rock

Mineral Specimen

Small Stone

Basalt Pebble

Fossilized Rock Fragment

White Mineral Specimen

Unidentified Rock

Rough Natural Stone

Raw Mineral Specimen

Unidentified Mineral Specimen (Possibly Quartz)

Lunar Meteorite

Small Rock Specimen

Foliated Metamorphic Rock Fragment (Schist/Phyllite)

Rough Mineral Specimen

Botryoidal Agate Specimen

Unidentified Mineral Ore Specimen

Mineral Specimen

Node of Crystalline Structure

Granite Rock

Multi-Mineral Rock Specimen (Possibly Pegmatite or Gneiss)

Weathered Geode Fragment or Porous Rock