Galena, Shafter District, Presidio County, Texas
Mineral: Galena Location: Presidio Mine, Shafter District County: Presidio County, Texas Chemical Formula: PbS Crystal System: Isometric Specimen Size: 4.5 x 3.2 x 4.5 cm Specimen Weight: 76 grams Other interesting facts: details are documented in J.A. Head MSc thesis at Univ. Texas (2002)
Endlichite, Arsenovanadinite, Descloizite (closeup), Presidio County, Texas
Minerals: Endlichite, Arsenovanadinite, Descloizite Closeup field-of-view 2 centimeters across Location: Shafter Mine (Rio Grande Mining), Shafter District County: Presidio County Specimen size: 16x16x12 cm Specimen weight: 2.8 kilograms This specimen was recently collected (2013) from the new Rio Grande Mining workings.
Galena, Calcite & Quartz, Presidio County, Texas
Mineral: Galena in Calcite and Quartz Location: Presidio Mine, Shafter District County: Presidio County, Texas Specimen Size: 15.2 x 12 x 6 cm Specimen Weight: 1.03 kilograms Other interesting facts: details are documented in J.A. Head MSc thesis at Univ. Texas (2002)
Minerals: Endlichite, Arsenovanadinite, Descloizite Closeup field-of-view 3 cm high by 4 cm across Location: Shafter Mine (Rio Grande Mining), Shafter District County: Presidio County Specimen size: 16x16x12 cm Specimen weight: 2.8 kilograms This specimen was recently collected (2013) from the new Rio Grande Mining workings.
Galena, Quartz & Calcite in silicified dolostone, Presidio County, Texas
Galena, Calcite, Quartz in silicified Dolostone Location: Shafter Mine (Rio Grande Mining), Shafter District County: Presidio County, Texas Specimen Size: 8.5 x 12.0 x 10 cm Specimen Weight: 1.39 kilograms This specimen was collected from the new Rio Grande Mining workings in 2013.
Plattnerite, Presidio County, Texas
Mineral: Plattnerite, a Lead Dioxide Location: Presidio Mine, Shafter District County, Presidio County, Texas Chemical Formula: PbO2 Crystal System: Tetragonal (rutile group) Specimen Size: 3 x 2.5 x 3 cm Specimen Weight: 15grams Other interesting facts: details are documented in J.A. Head MSc thesis at Univ. Texas (2002)
Endlichite, Arsenovanadinite, Descloizite, Presidio County, Texas
Minerals Endlichite, Arsenovanadinite, Descloizite Location: Shafter Mine (Rio Grande Mining), Shafter District County: Presidio County Specimen size: 16x16x12 cm Specimen weight: 2.8 kilograms This specimen was recently collected (2013) from the new Rio Grande Mining workings.