Chrysanthemum Stone Porphyrite 60/80

Chrysanthemum Stone Porphyrite 60/80

Chrysanthemum stones are these flowers-porphyrites with this white suns. The chrysanthemum stone is not a real Porphyrit! He comes mostly from China and has just been named so for a long time. The name actually refers to the Chysanthemenstein erinnenrndenCoelestinkristalle after chrysanthemums. So chrysanthemum stone with Coelestinkristallen. The dark matrix is ​​a limestone with high bitumen content and the blasting or flowers are Coelestinkristalle. The bright crystals of the chrysanthemum stone are arranged radialstrahlig. Real Porphyrit there are also brighter, but in dark shade with white crystals. The rock is of volcanic origin, which have a matrix with small stone inclusions or crystalline inclusions. The crystals are before the volcano erupts in the magma already formed. after the outbreak of the rock is very hard so fast also fine-grained matrix can form, for larger crystals to form lacks quite simply the time. The white parts, we call them crystals are acidic components in the basic Andesitmatrix. Real Porphyrit one of the andesite Porphyriten. Volcanics with crystal inclusions in a fine-grained matrix. In real porphyry, not in this for sale offered Chrysanthemum specimen are usually oligoclase, chlorite, epidote and white feldspar. (Often rhyolite rock).