Calcite on Calcite Crystal Cluster | 64g | Oskaloosa, Mahaska County, Iowa, USA Mesosiderite Some workers have suggested that

Some workers have suggested that the rocks are frictionites (fused rocks from landslide heating)

Its dimensions are 99x63x7 mm

Product Type: Two Sided 925 Sterling Silver Pendant (20" silver plated chain included)

large cluster of Okenite

Approx Weight (per piece):  1

Calcite on Calcite Crystal Cluster | 64g | Oskaloosa, Mahaska County, Iowa, USA Mesosiderite Some workers have suggested thatThis is a natural cluster formation of calcite on calcite crystals or two variations of the mineral found in a cracked concretion in a coal mine in Oskaloosa, Mahaska County, Iowa, USA. It is a specimen consisting of two types of calcite on matrix. The first type is a coating of iridescent, dark calcite on the matrix. The second type are white crystals of calcite. It is in good condition. Would be a nice addition to any new or existing collection.