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Raw and unrefined manganese ore in front of white isolated background, geology and mining
Hematite crystal background.
manganese nodule recovered in the Pacific from a depth of approximately  4000m between Hawaii and Mexico (Clarion-Clipperton-Area) isolated on white background
Hemp protein powder in a Petri dish on a white background
Calcium Chloride flakes, salt in solid state, used in brine for refrigeration machines, road dust and ice control, in cheese and in cement. Industrial use, isolated black background, copyspace
Potassium permanganate (KMnO4) with chemical structure , a common chemical compound that combines manganese oxide ore with potassium hydroxide.
A rock sample of Obsidian a volcanic glass rock extruded from a volcano
small gray shiny metallic nugget just found by searchers on the white background
Raw galena ore, aka lead sulfide, with blue-grey color on dark background
Beautiful unusual gray-black crystal stone cassiterite with a metallic sheen standing in the glass stand. Close up for shining crystal standing on the table.
Magnified close up of mineral encrusted basalt rock.
Colorful dry chemicals and magnetic material in loose powder form varying in a wide range of shades.
Rheum officinale, Chinese rhubarb, Rheum palmatum L.
calcium carbonate lumens, used in the treatment of hyperphosphatemia in patients with renal failure or associated with hyperparathyroidism and in hypocalcemic states
Minerals and Jewels
black mineral (magnetite) specimen
Stone image on a white background
Equipment for doing science experiment about sedimentation by using alum stone with ash water in glass.Concept, Education, Easy activity lesson for kids. Reaction of chemical substance in alum stone.
Hematite,  is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. Hematite crystallizes in the rhombohedral lattice system.it has the same crystal structure as ilmenite and corundum.
limonite from the Black Forest, Germany isolated on white background
Isolated sample of a Magnesite rock on texture background. Magnesite Sedimentary Rock sample. Magnesite rock isolated.
chinese medicine Aloe vera resin, dried juice
Copper(II) sulfate with molecular structure. Chemical ingredient used in medical and public health issues.
Chrysocolla crystal isolated on a black, and white background.
brown iron oxide, synthetic iron oxide used as a dye
Macro shooting of specimen natural rock - piece of Gabbro (basalt) mineral stone isolated on white background.
Potassium permanganate is the potassium salt of permanganic acid unknown in the free state
Close up of a metamorphic rock with crusted mineral.
Free Images: "bestof:Manganese(II) oxide.JPG en Manganese II oxide precipitate mixed with water own Chemicalinterest 2011-1-1 Manganese II oxide"
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