Cryptomelane
Cryptomelane is a potassium manganese oxide mineral with formula K(Mn4+, Mn2+)8O16. It is a mineral consisting of an oxide of manganese and potassium, probably KMn8O16.H2O,…
Geographic Minerals
Cryolite: Properties and Occurrences
Cryolite (Na3AlF6, sodium hexafluoroaluminate) is an uncommon mineral identified with the once large deposit at Ivigtût on the west coast of Greenland, depleted by 1987.…
Crossite: Properties and Occurrences
Crossite is an inosilicate double chain sodic amphibole and is a rare silicate mineral belonging to the riebeckite group. It is an amphibole intermediate in…
Crookesite: Properties and Occurrences
Crookesite is a selenide mineral composed of copper and selenium with variable thallium and silver. It is a rare mineral, selenide of copper, thallium, and…
Cronstedtite
Cronstedtite is a complex iron silicate mineral belonging to the serpentine group of minerals. It has a formula of Fe2+2Fe3+(Si, Fe3+O5)(OH)4. It is a trigonal-ditrigonal…
Crocoite: Properties and Occurrences
Crocoite is a mineral consisting of lead chromate, PbCrO4, and crystallizing in the monoclinic crystal system. It is a rare bright orange mineral consisting of…
Cristobalite: Properties and Occurrences
The mineral cristobalite is a high-temperature polymorph of silica, meaning that it has the same chemical formula as quartz, SiO2, but a distinct crystal structure.…
Types of Interviews on the Basis of Methods
An interview is a face-to-face interaction between interviewer and interviewee. If conducted carefully and properly, it observes and appraises the suitability of the candidate to…
Creedite: Properties and Occurrences
Creedite is a calcium aluminum sulfate fluoro hydroxide mineral with formula: Ca3Al2SO4(F, OH)10·2(H2O). It is a monoclinic-prismatic mineral containing aluminum, calcium, fluorine, hydrogen, oxygen, and…
Coyoteite: Properties and Occurrences
Coyoteite is a hydrated sodium iron sulfide mineral. It is a triclinic black mineral containing hydrogen, iron, oxygen, sodium, and sulfur. It is moderately magnetic.…
Covellite: Properties and Occurrences
Covellite (also known as covelline) is a rare copper sulfide mineral with the formula CuS. It is a blue mineral consisting of copper sulphide, typically…
Cotunnite: Properties and Occurrences
Cotunnite is the natural mineral form of lead(II) chloride with formula PbCl2. It is a mineral form of lead chloride formed by alteration of Galena.…
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