9iddbis ((COLEMANITE on CALCITE), $15 MINIMUM BID, Boron Open Pit Mine, Boron, Kern County, California, 8.5 x 8 x 4.5 cm, Cabinet | |
One side is covered with Colemanite and has some damage in the middle. Other side which is probably the display side has large rounded areas of brown Calcite covered the large and very small Colemanite crystals. ex Jim Minette collection |