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Malachite is a copper carbonate hydroxide mineral, with the formula Cu 2 CO 3 (OH) 2.This opaque, green-banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and deep, underground spaces, where the water table and hydrothermal fluids provide the means for chemical precipitation.
Baryte (included by malachite) on malachite, from Shangulowé Mine, Kambove, Central area, Katanga, Democratic Republic of Congo Spiky calcite scalenohedra with a coating of whitish benstonite on a layer of teal-colored fluorite Thin tabular biotite cluster Brookite from Kharan, Balochistan, Pakistan
Mineral symbols (text abbreviations) are used to abbreviate mineral groups, subgroups, and species, just as lettered symbols are used for the chemical elements.. The first set of commonly used mineral symbols was published in 1983 and covered the common rock-forming minerals using 192 two- or three-lettered symbols. [1]
Zelyonka. Brilliant green has been used to color silk and wool.. It is indicated for disinfection of fresh postoperative and post-traumatic scars, umbilical cord of newborns, abrasions, cuts, and other violations of the integrity of the skin, in the treatment of purulent-inflammatory processes of the skin - hordeolum ("barley"), meibomite, blepharitis, pyoderma, local furunculosis ...
A synthetic form of malachite, verditer, has also been used. In Latin America, the Teotihuacan civilisation, which ruled in Mexico between 300 and 650, AD, made murals using crushed malachite, which was mixed with chalk for lighter shades, or mixed with blue from azurite or lapis-lazuli to make blue greens, or with yellow ochre to make yellow ...
Malachite green is also used in endospore staining, since it can directly stain endospores within bacterial cells; here a safranin counterstain is often used. Malachite green is a part of Alexander's pollen stain. Malachite green can also be used as a saturable absorber in dye lasers, or as a pH indicator between pH 0.2–1.8. However, this use ...
pH indicators: a graphic view. A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1]
Azurmalachite is a mixture of azurite and malachite. [1] It is alternatively called azuromalachite, azurite-malachite and malachite-azurite. [2] Azurmalachite has a distinctive mottled green and blue coloration. It is relatively rare but can sometimes be found above copper deposits.