Azurite and Malachite (Copper Ore), Hardeman County, Texas
Azurite, Malachite and Calcite 's
Chemical Formula: Cu3(CO3)2(OH)2 for both Azurite and Malachite 's
Crystal System: Monoclinic 's
Specimen size: 10 x 7.5 x 2.5 cm 's
Specimen weight: 265 grams 's
Collection reference identification: TMM-1490. 's
Specimen in the permanent collection of the Jackson School of Geosciences, University of Texas at Austin.
Core and assay information (> 4% Cu) on a copper occurrence called Cottonwood Creek in Permian age rocks in Hardeman County is listed on https://thediggings.com/mines/usgs10022082.