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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.
The Wolastoqiyik, [1] also Wəlastəkwewiyik, Malecite or Maliseet (English: / ˈ m æ l ə s iː t /) [2] are an Algonquian-speaking First Nation of the Wabanaki Confederacy. They are the Indigenous people of the Wolastoq ( Saint John River ) valley and its tributaries.
Both malachite and azurite, as well as synthetic basic copper carbonate have been used as pigments. [10] One example of the use of both azurite and its artificial form blue verditer [ 11 ] is the portrait of the family of Balthasar Gerbier by Peter Paul Rubens . [ 12 ]
The basic level of definition is that of mineral species, each of which is distinguished from the others by unique chemical and physical properties. For example, quartz is defined by its formula , SiO 2 , and a specific crystalline structure that distinguishes it from other minerals with the same chemical formula (termed polymorphs ).
Citrine “A powerful gemstone crystal in a range of deep yellows, oranges, and yellow-cream-white, the citrine gemstone is said to bring abundance and wealth into one’s life,” Salzer says.
The optical properties (color, intensity) of minerals such as azurite and malachite are characteristic of copper(II). Many coordination complexes of copper(II) exhibit similar colors. According to crystal field theory, the color results from low energy d-d transitions associated with the d 9 metal center. [12] [13]
Malachite green is an organic compound that is used as a dyestuff and controversially as an antimicrobial in aquaculture. Malachite green is traditionally used as a dye for materials such as silk, leather, and paper. Despite its name the dye is not prepared from the mineral malachite; the name just comes from the similarity of color.
The Houlton Band of Maliseet Indians of Maine (HBMI) (Malecite-Passamaquoddy: Metaksonekiyak Wolastoqewiyik (MW)) [3] is a federally recognized tribe of Maliseet, whose land is along the Meduxnekeag River in Maine, United States. [4] They are headquartered in Littleton, Maine, located in Aroostook County.