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bauxite is a natural mixture of aluminum oxides. Used in the production of alumina, cement and other industrial products
Triangle calcite crystal cluster from Turkey.\nCalcite is a mineral name and the chemical structure of this mineral, called carbonate rocks, is CaCO3. It is found in crystal form in various shapes (crystallizes as rhomboid, scalenoeder) and has a glassy, ​​colorless and transparent structure. It is easily ground and a white powder is obtained. Its hardness is 3 on Moh's scale and its density is 2.6-2.7.
Hyalite opal isolated on white blackground. macro detail  background. close-up Rough raw unpolished semi-precious gemstone.
glaucophane schist mineral sample under light microscopy
calcite crystal mineral sample,a rare earth gem stone
Gray black one marble stone. Isolated on a white background.
Quartz crystal isolated on white background, semi-precious stones or gemstone design elements, side view. For text. Horizontal
zeolite a naturally occuring mineral in volcainic rocks due to groundwater crystalisat
Albite crystal mineral, white background close up. Lepidolite
Raw yellow Fluorite (fluorspar) rock isolated
macro mineral stone lepidolite on a white background close up
White powder
aragonite crystal mineral sample, a rare earth mineral
very weathered fossil of a amonite in chalk rock on white background
Calcite rock isolated on white , Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate.
Aragonite
Rockslide destroyed a house. Paper house under stone
The white color rocks seen here along the shoreline of Lake Salda in Turkey were formed over time by microbes that trap minerals and sediments in the water. These so-called microbialites were once a major form of life on Earth and provide some of the oldest known fossilized records of life on our planet.
Macro stone albite mineral white background close up. Aquamarine on Albite
Volcanic Basalt lava rock sample. Cavities due to escaping gas bubbles later filled with mineralisation from groundwater fluids
Olmiite photography isolated on white blackground. From N'Chwaning II mine, south africa. macro detail  background. close-up Rough raw unpolished semi-precious gemstone.
phyllite mineral sample studio shot with white background
A raw cluster of pyrite, galena, limonite, calcite and sphalerite isolated on a white background surface macro. A variety of crystallised sulfide, hydroxide, iron and silicate minerals in matrix.
Purple Banded Agate
macro mineral stone petalite on a white background close up
Green quartz crystal isolated on the white background.
Feldspar, closeup of the mineral cut out on a white background
Close up of a metamorphic rock with crusted mineral.
Natural specimen of foraminiferal ooze limestone - organogenic sedimentary rock, relatively soft and porous variety of limestone, used for the interiors, reliefs, carvings and sculpture, on white
nephrite mineral stone
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