Enstatite-pas-146b
Autor:
Credit:
Krótki link:
źródło:
Wymiary:
400 x 342 Pixel (38251 Bytes)
Opis:
Enstatite
- Locality: Bare Hills Copper Mine (Smith Avenue Copper Mine), Bare Hills, Baltimore County, Maryland, USA (Locality at mindat.org)
- Size: cabinet, 9.6 x 7.5 x 4.9 cm
- Enstatite var. Bronzite
- A classic from a very old American locality that is a varietal of enstatite but apparently still a valid species as I read it. Note the curving, bronzy," well-defined crystals. From the noted W.W. Jefferis (1820-1906) Collection. According to MINDAT, this was a "copper mine located about 1 mile NW of Mt Washington and about 3 miles NW of Baltimore. Started 1845 and closed 1880. Reopened during the period 1905." Jefferis handling of the specimen would have been from the heyday of the mine, in the mid 1800s. Note the early museum accession number 6846, as well. This is a big, somewhat showy, display-worthy specimen from a long-vanished locality, proably under a building for 100 years now.
Licencja:
Warunki licencji:
Creative Commons Attribution-Share Alike 3.0
Więcej informacji o licencji można znaleźć tutaj. Ostatnia aktualizacja: Fri, 23 Dec 2022 01:10:14 GMT