Hagendorfite is an iron phosphate mineral with the chemical formula of (Na,Ca)MnFe2(PO4)3 and is named after where the mineral was discovered, Hagendorf-Süd, Bavaria, Germany. Hagendorfite is in the monoclinic crystal class; the mineral's internal symmetry consists of three axes with unequal length. Furthermore, the angles between two of the axes is 90° while the other angle is less than 90°. Monoclinic minerals contain a twofold rotation axis where they can be rotated 360° and have the crystal face repeat every 180°. They also have the characteristic mirror plane, which can produce a perfect mirror image when divided in two.
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| - Hagendorfita (ca)
- Hagendorfit (de)
- Hagendorfite (en)
- Hagendorfita (eu)
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| - La hagendorfita és un mineral de la classe dels fosfats, que pertany al grup de l'al·luaudita. Va ser descobert l'any 1954 i rep el seu nom del lloc on es va descobrir, Hagendorf-Süd, Baviera, Alemanya. (ca)
- Hagendorfit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“ mit der chemischen Formel NaCaMnFe2+2[PO4]3, ist also chemisch gesehen ein Natrium-Calcium-Mangan-Eisen-Phosphat. Hagendorfit kristallisiert im monoklinen Kristallsystem, entwickelt aber nur sehr selten mit bloßem Auge sichtbare, durchscheinende Kristalle bis etwa vier Millimeter Größe. Meist findet er sich in Form derber, spätiger Massen von dunkelgrüner bis schwarzgrüner Farbe. Mit bildet Hagendorfit eine lückenlose Mischkristall-Reihe. (de)
- Hagendorfita]] = fosfato motako minerala da eta alluaudite taldearen kidea da. (eu)
- Hagendorfite is an iron phosphate mineral with the chemical formula of (Na,Ca)MnFe2(PO4)3 and is named after where the mineral was discovered, Hagendorf-Süd, Bavaria, Germany. Hagendorfite is in the monoclinic crystal class; the mineral's internal symmetry consists of three axes with unequal length. Furthermore, the angles between two of the axes is 90° while the other angle is less than 90°. Monoclinic minerals contain a twofold rotation axis where they can be rotated 360° and have the crystal face repeat every 180°. They also have the characteristic mirror plane, which can produce a perfect mirror image when divided in two. (en)
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| - a = 11.9721 Å (en)
- b = 12.5988 Å (en)
- c = 6.5029 Å (en)
- β = 114.841°, Z = 4 (en)
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| - Iron phosphate minerals (en)
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| - Measured: 68° to 70° (en)
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| - La hagendorfita és un mineral de la classe dels fosfats, que pertany al grup de l'al·luaudita. Va ser descobert l'any 1954 i rep el seu nom del lloc on es va descobrir, Hagendorf-Süd, Baviera, Alemanya. (ca)
- Hagendorfit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“ mit der chemischen Formel NaCaMnFe2+2[PO4]3, ist also chemisch gesehen ein Natrium-Calcium-Mangan-Eisen-Phosphat. Hagendorfit kristallisiert im monoklinen Kristallsystem, entwickelt aber nur sehr selten mit bloßem Auge sichtbare, durchscheinende Kristalle bis etwa vier Millimeter Größe. Meist findet er sich in Form derber, spätiger Massen von dunkelgrüner bis schwarzgrüner Farbe. Mit bildet Hagendorfit eine lückenlose Mischkristall-Reihe. (de)
- Hagendorfite is an iron phosphate mineral with the chemical formula of (Na,Ca)MnFe2(PO4)3 and is named after where the mineral was discovered, Hagendorf-Süd, Bavaria, Germany. Hagendorfite is in the monoclinic crystal class; the mineral's internal symmetry consists of three axes with unequal length. Furthermore, the angles between two of the axes is 90° while the other angle is less than 90°. Monoclinic minerals contain a twofold rotation axis where they can be rotated 360° and have the crystal face repeat every 180°. They also have the characteristic mirror plane, which can produce a perfect mirror image when divided in two. Hagendorfite belongs to the monoclinic crystal class, so it is assigned to the biaxial optical class. Hagendorfite's optic sign, which is negative, is proven by examining its interference figure. Biaxial minerals, including Hagendorfite, have three indices of refraction which may or may not correspond with the mineral's unequally lengthened axes. A refractive index will provide the ratio of the speed of light in a vacuum with the speed of light in the mineral. A single refractive index is given when two rays of light vibrate in the mineral's circular section and move along the optic axes. (en)
- Hagendorfita]] = fosfato motako minerala da eta alluaudite taldearen kidea da. (eu)
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| - {001} good, {110} poor (en)
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| - Massive – uniformly indistinguishable crystals forming large masses. (en)
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| - : Yellowish brown : green : bluish green (en)
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| - nα = 1.735 nβ = 1.742 nγ = 1.745 (en)
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