Apophyllite, deep blue green blocky Pseudocubic crystals.
Dimensions: (millimeters): 18 x 12 x 10
Dimensions (inches): .7 x .5 x .4
Origins: from Shirurampur, Maharashtra, India
Thumbnail specimen, housed in small acrylic museum box.
Apophyllite almost always occurs together with zeolites, especially in traprock (Basalt, lava flows) environments. This one from the Deccan Plateau or "traps" are likely the largest volcanic feature in the world. The green color is caused by an unidentified inclusion.
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