Basalt specimens
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Calcite (fluorescent) on basalt
Irai, Rio Grande do Sul, Brazil
$1200
60mm x 60mm x 20mm
From: The Arkenstone
Strontianite on basalt
Winfield, Union Co., Pennsylvania, USA
$24
21mm x 17mm x 16mm
From: Bob Griffis Minerals
Natrolite and Analcime in basalt
Andesite beds, Tick Canyon headwaters, Los Angeles County, California, USA
$50
114mm x 95mm x 50mm
From: Bob Griffis Minerals
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