karlite

Also known as IMA1980-030

Karlite (kar'-lite) is a silky white to light green orthorhombic borate mineral, not to be confused with tremolite-actinolite. It has a general formula of Mg7(BO3)3(OH)4Cl. Karlite is named in honor of Franz Karl (1918–1972), professor of mineralogy and petrography at Christian Albrechts University in Kiel, Germany, for his studies of the geology of the eastern Alps.

In the Vinony graph

Vinony's link graph records 5 inbound references to karlite, and connects out to Germany, geology and Alps.

It sits within the topics Borate chlorides, Borate minerals and Magnesium minerals.

Vinony links it to 4 Wikipedia language editions.

Wikidata facts

Image: Karlite.jpg

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IMA Mineral Symbol: Ka
chemical formula: Mg₇(BO₃)₃(OH,Cl)₅
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 6.AB.25
Mohs' hardness: 5.5
Nickel-Strunz 9th edition (updated 2009): 6.AB.25
Commons category: Karlite

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Encyclopedic overview

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{{Infobox mineral | name = Karlite | category = Borate mineral | boxwidth = | boxbgcolor = | image = Karlite.jpg | imagesize = | caption = | formula = Mg7(BO3)3(OH)4Cl | IMAsymbol = Ka | molweight = 412.74 g/mol | strunz = 6.AB.25 | system = Orthorhombic | class = Disphenoidal (222) H-M symbol: (222) | symmetry = P212121 | unit cell = | color = | habit = Acicular, fibrous, rosette like and fibrous aggregates | twinning = | cleavage = Perfect on {001} | fracture = | tenacity = | mohs = | luster = Silky | refractive = nα = 1.589 nβ = 1.632 nγ = 1.634 | opticalprop = Biaxial (-) | birefringence = δ = 0.045 | pleochroism = | streak = White | gravity = 2.80-2.85 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Semitransparent | other = | references = }}

Excerpted from Wikipedia’s “karlite” article, available under the CC BY-SA 4.0 licence.