|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Iowa > Calcite|
|Locality:||Oskaloosa area coal mines, Mahaska County, Iowa|
|Description:||Classic specimen of two generations of calcite on matrix. The first generation is iridescent brown rhombic crystals to 6 mm on edge, with later growth white scalenohedral crystals to 10 mm, including some doubly-terminated.|
|Overall Size:||12x8x7 cm|
|Archived:||For reference only|
|Buy similar:||Minerals from Midwest, USA > Calcite Specimens|
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