The word granite comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a crystalline rock. Granite is a common widely occurring type of intrusive, felsic, igneous rock which is granular and crystalline in texture. This rock consists mainly of quartz, mica, and feldspar. Occasionally some individual crystals (phenocrysts) are […]
Category: Natural
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Onyx
Onyx comes through Latin (of the same spelling), from the Greek, meaning “claw” or “fingernail”. With its flesh tone color, onyx can be said to resemble a fingernail. It is by all meanings a very valuable processed material due to its particular formation which donates to each slab from the same stone very different colored […]
Sandstone
Sandstone known also as arenite is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains. Most of the sandstones are composed of quartz and/or feldspar (a rock that does not contain minerals with important elements including metals) like sand. The sandstones may be any color, but the most common colors are tan, […]
Limestone
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera. Limestone contains often variable amounts of silica which is oxide of silicon known by is chemical formula as […]
Travertine
Travertine is a form of limestone deposited by mineral springs, especially hot springs. Travertine often has a fibrous or concentric appearance and exists in white, tan, and cream-colored varieties. It is formed by a process of rapid precipitation of calcium carbonate, often at the mouth of a hot spring or in a limestone cave. In […]
Marble
The word “marble” derives from the Greek from mármaros, “crystalline rock”, “shining stone”, or perhaps from the verb marmaírō, “to flash, sparkle, gleam”. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks, most commonly limestone or dolomite rock. Metamorphic is derived from the Greek word “meta” denoting a change and “morph” meaning form […]
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