Calcite, Aragonite and Dolomite (variety ferroan) on Quartz
Keokuk, Condado Lee, Iowa, USA
geode is about 3.3 cm, calcite is 0.7 cm, aragonite spray is 1.3 cm
(Author: Bob Harman)
Dimensiones: | 860 x 1071 |
Tamaño fichero: | 249.96 kbytes |
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