Maryland sand chrome ore
1919; Volume: 14; Issue: 3 Linguagem: Inglês
10.2113/gsecongeo.14.3.189
ISSN1554-0774
Autores Tópico(s)Mineral Processing and Grinding
ResumoThe chrome industry inMaryland commenced with the discovery of chromite on the farm of Isaac Tyson at Bare Hills near Baltimore, at a date usually placed at either I8o8 to •8•o or about •827.The Soldiers Delight region, about ten miles west of Bare Hills, seems to have been discovered soon after.The association of c. hromite with serpentine was promptly recognized; and as the belt of serpentine rocks extending across the state was rather clearly marked by a belt of "barrens," the discovery of the chromite deposits was made easy and within a very few years all the productive chrome deposits of the state had been discovered (Fig. I5).From •828 to •85 o, most of the world's supply of chrome ore was shipped from Baltimore and came from deposits in Maryland and the adjoining portions of Pennsylvania.Then competition of larger and richer deposits in Turkish Asia Minor cut into the export trade, and exports practically ceased by x86o.In the late seventies, California ores competed in the domestic market and chrome mining in Maryland as a regular industry came to an end at about •88o.
Referência(s)