Stone Marble Texture Granular Grain size medium grained Mineralogy calcite Hardness Hard MARBLE Marble is a granular metamorphic rock, it is derived from limestone or dolomite and It consists of a mass of interlocking grains of calcite or the mineral dolomite. Form of it when limestone buried deep in the older layers of Earth’s crust […]
Classification Silicate Luster Vitreous Diaphaneity Translucent Hardness 7 Crystal Hexagonal Occurrence and distribution Quartz is one of the most abundant minerals on earth and is found in many rock types including igneous, metamorphic, and sedimentary rocks. It is particularly common in continental crust rocks such as granites and rhyolites, and in sedimentary rocks such as […]
Color and banding Vary widely Hardness 6.5 Transparency Translucent to opaque Lustre Waxy Fracture Conchoidal Onyx Onyx is a type of chalcedony, which is a microcrystalline form of quartz. It is a banded variety of chalcedony that forms in concentric layers of different colors. Onyx typically has a black base with white or colored bands. The colored […]
Hardness 7 – 10 Density High Color Wide Range Texture Coarse-grained and granular Porosity Low Granite Granite is the most common intrusive rock in Earth’s continental crust, It is familiar as a mottled pink, white, gray, and black ornamental stone. It is coarse- to medium-grained. Its three main minerals are feldspar, quartz, and mica, which […]
Texture Granular Grain size Medium Hardness 7 Colour Wide Variety Other Gritty to touch Quartzite Quartz-rich sandstone is altered via the warmth, pressure, and chemical interest of metamorphism. These situations recrystallize the sand grains and the silica cement that binds them collectively. The result is a network of interlocking quartz grains of incredible power. When […]