This specimen was originally procured from the University of MIchigan. It was sold again in 1995 by Illinois dealer, David Crawford, (label provided). It consists of an excellent grouping of amber colored calcite crystals on matrix. It is from the classic locality of Elk Creek, South Dakota.
Large bladed calcite accompanied by a smaller grouping of calcites at the base. Upon closer examination there are several clear fluorite cubes at the base of the smaller calcite grouping and covering additional matrix. This specimen is highly UV reactive as shown in the supplemental pictures. It is from Xianghuapu Mine, Linwo County, Chenzhou, Hunnan Province, China.
A large 4.5 x 3.5 x 3.5 lustrous calcite crystal sits proudly atop a matrix covered with small quartz crystals. This piece is attractive under normal light and gorgeous under UV light. The specimen is from Xianghuapu mine, Linwo Co., Chenzhou Prefecture, Hunan Province, China.
A larger cabinet size specimen with an attractive grouping of three minerals. The dolomite preferentially covers one face of the red quartz. Chalcopyrite crystals are sprinkled across the display face. This specimen comes from Dongxiang Co., Jiangxi Province, Inner Mongolia, China.
An interesting specimen from Huanggang Mine, Hexigten Banner, Chifeng, Inner Mongolia, China. The contrast between the green and purple fluorite crystals is striking. intermittent exposure of the white matrix attenuates the color in the fluorite. The majority of the purple fluorite crystals are octahedral. However there are also some cubes.