Schorl Tourmaline Crystal | Perky Box Thumbnail Specimen | N. Groton, New Hampshire Hackmanite This is a superb sculpted

This is a superb sculpted specimen of Mundrabilla classified meteorite weighing 60

The iridescence is due to the presence of microscopic crystals of calcium carbonate layered within the shell

Dimensions: 112x44x34 / 4

The belemnites evolved from nautiloids

Schorl Tourmaline Crystal | Perky Box Thumbnail Specimen | N. Groton, New Hampshire Hackmanite This is a superb sculptedName: Schorl Tourmaline Specimen Size: Thumbnail Sized Dimensions: Specimen 20x16 mm 0. 8x0. 6 inches Specimen Box 33x33 mm 1. 3x1. 3 inches Weight: 19. 5 Grams 0. 7 Ounces (including box) Origin: Mined in Rice Mine, N. Groton, Grafton County, New Hampshire This locality dates to the late nineteenth century and fine specimens from here are hard to obtain.