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4" Botryoidal Prehnite Formation - Mali
This is a 4" wide cluster of translucent, botryoidal green prehnite formations, collected from the Kayes Region of Mali, Africa.
About Prehnite
Prehnite is a translucent to transparent mineral typically ranging in color from pale green to yellow-green, though it can also appear white, gray, or colorless. It often forms in botryoidal, globular, or crystalline habits and has a vitreous to pearly luster. Prehnite is a calcium aluminum silicate hydroxide and is commonly associated with zeolites in the cavities of volcanic rocks. It has a Mohs hardness of 6 to 6.5 and is found in locations worldwide, including South Africa, Australia, China, and the United States.
Prehnite is a translucent to transparent mineral typically ranging in color from pale green to yellow-green, though it can also appear white, gray, or colorless. It often forms in botryoidal, globular, or crystalline habits and has a vitreous to pearly luster. Prehnite is a calcium aluminum silicate hydroxide and is commonly associated with zeolites in the cavities of volcanic rocks. It has a Mohs hardness of 6 to 6.5 and is found in locations worldwide, including South Africa, Australia, China, and the United States.
