Quartz-after-Calcite
specimen number:
3921262
location:
Hwy 61 Roadcut, north of Silver Bay, Minnesota, USA
description:
An open cavity in this matrix lined with crystals of what were once calcite to 2.0 cm in size now replaced by quartz. In good condition. Previous label says that this is one of only two known specimens in the site is now gone under the highway. Collected by a Mr. Hoff of Hoff's Rock Shop.
Size: 14.5 x 9.5 x 9.0 cm (cabinet)
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Related by Mineral (Quartz):
Quartz — Switzerland
Origin: Val Giuv, Tujetsch, Surselva Region, Grisons, Switzerland
Number: (1052444)
Size: 6.0 x 5.0 x 3.0 cm (small-cabinet)
Quartz — Zimbabwe
Origin: Chibuku Mine, Chiredzi, Masvingo, Zimbabwe
Number: (9711652)
Size: 8.0 x 5.0 x 3.5 cm (small-cabinet)
Quartz — UK
Origin: Florence Mine, Egremont, Cumbria, England, UK
Number: (1653837)
Size: 17.5 x 11.0 x 3.5 cm (large-cabinet)

