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Karlite (kar'-lite) is a silky white to li … 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 (1918–1972), professor of mineralogy and petrography at Christian Albrechts University in Kiel, Germany, for his studies of the geology of the eastern Alps. Karlite possesses moderate optical relief, the degree to which the mineral grains stand out from the mounting medium. This mineral is orthorhombic and sphenoidal, exhibiting symmetry on 222. Karlite is also enantiomorphic and dihedral. It is a member of the P212121 space group. This mineral forms optically negative biaxial birefringent crystals, meaning that the 2V angle between the optic axes is bisected by the refractive index direction. Because this mineral possesses birefringence, we know it is anisotropic and will display double refraction; it breaks light into two different rays traveling at different speeds in the mineral. Karlite is a relatively newly discovered borate mineral occurring in clinohumite-chlorite marble in calcsilicate-carbonate lenses embedded in amphibolite. The amphibole at the original locale is situated between tectonic units "Zentralgneis" and "Schieferhulle". Scholars assume that the high boron concentration needed for the formation of karlite is due to a contact metasomatism created by Hercynian tonalitic magmas, which make up the "Zentralgneis", although the boron content of karlite is not of commercial importance. This mineral was originally discovered in the Furtschaglkar near the Furtschaglhaus in Austria, but has also been found in Russia and France, and was probably formed during the alpine metamorphism of the Alps.uring the alpine metamorphism of the Alps.
, Karlita motako minerala da.
, La karlite è un minerale.
, La karlita és un mineral de la classe dels borats. Rep el seu nom del Dr. Franz Karl (1918–1972), professor de mineralogia i petrografia de la Universitat de Kiel (Alemanya).
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28852894
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4401
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1112444733
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| http://dbpedia.org/property/birefringence
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δ = 0.045
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http://dbpedia.org/resource/Borate_mineral +
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http://dbpedia.org/resource/H-M_symbol +
, Disphenoidal
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Perfect on {001}
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| http://dbpedia.org/property/diaphaneity
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Semitransparent
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| http://dbpedia.org/property/formula
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Mg734Cl
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| http://dbpedia.org/property/gravity
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2.8
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| http://dbpedia.org/property/habit
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Acicular, fibrous, rosette like and fibrous aggregates
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Ka
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Silky
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412.74
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| http://dbpedia.org/property/name
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Karlite
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| http://dbpedia.org/property/opticalprop
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Biaxial
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| http://dbpedia.org/property/refractive
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nα = 1.589 nβ = 1.632 nγ = 1.634
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White
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6
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P212121
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Karlite
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| rdfs:comment |
Karlite (kar'-lite) is a silky white to li … 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 (1918–1972), professor of mineralogy and petrography at Christian Albrechts University in Kiel, Germany, for his studies of the geology of the eastern Alps.tudies of the geology of the eastern Alps.
, La karlite è un minerale.
, La karlita és un mineral de la classe dels borats. Rep el seu nom del Dr. Franz Karl (1918–1972), professor de mineralogia i petrografia de la Universitat de Kiel (Alemanya).
, Karlita motako minerala da.
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| rdfs:label |
Karlita
, Karlite
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