andesite mineral stone
Andesite, a neutral erupting igneous rock with a grayish black or dark gray background color and with white or light gray spots (porphyry). These are usually plagioclase and may also contain dark minerals such as amphibole or pyroxene. Anshan magma is usually formed when the oceanic plate subducted under the continental plate.
brown pyroclastic with porphyrite
Pyroclastic is a porous, light pyroclastic rock formed by rapid cooling after the eruption of basaltic magma. Black, dark gray or brown (depending on the degree of oxidation). Rich in pores (bubbles), loose texture, low density. Basalt, containing pyroxene, plagioclase and other dark minerals.
The volcanic bomb on Tenerife Island
The volcanic bomb from Tenerife is a type of igneous rock formed during volcanic eruptions. These volcanic bombs are formed by the cooling and solidification of molten magma in the air, usually with unique shapes and textures. During a volcanic eruption, molten magma ejected from the volcano is formed by flying and cooling in the air. These rock blocks undergo rapid cooling and solidification in the air before finally falling to the ground. Volcanic bombs come in various shapes and sizes, usually presenting streamlined, spindle shaped, or irregular shapes.
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