Description
Rock fragment of volcanic porphyry with dark gray metallic sylvanite in granular and bladed masses on one side. The other side is cut to exhibit the porphyritic nature of the parent rock.
Subject
Details
- Date
- 1804
- Creator
- Shepard, Charles Upham, 1804-1886
- Publisher
- University of South Carolina. McKissick Museum.
- Coverage
- Baia de Aries, Alba County, Romania
- Relations
- Historic Southern Naturalists
