Minerals identify

Know how to recognize them

Gmelinite

Zeolites

Gmelinite-Na is one of the rarer zeolites but the most common member of the gmelinite series, gmelinite-Ca, gmelinite-K and gmelinite-Na. It is closely related to the very similar mineral chabazite. Gmelinite was named as a single species in 1825 after Christian Gottlob Gmelin (1792–1860) professor of chemistry and mineralogist from Tübingen , Germany, and in 1997 it was raised to the status of a series. Gmelinite-Na has been synthesised from Na-bearing aluminosilicate The naturally occurring mineral forms striking crystals, shallow, six sided double pyramids, which can be colorless, white, pale yellow, greenish, orange, pink, and red. They have been compared to an angular flying saucer.

Identification

Color of mineral

White
Yellow
Orange
Green
Pink
Red
Grey
Brown

Density ( specific gravity )

1.476
1.474

Luster ( interacts light )

Dull
Vitreous

Crystal ( diaphaneity )

Hexagonal