Hibonite, los ntawm Madagascar

Hibonite Madagascar

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Gemstone Nqe Lus

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Hibonite, los ntawm Madagascar

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Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19) yog lub pob zeb dub dub nrog lub zog ntawm 7.5-8.0 thiab ib tus qauv siv coj los ua tus qauv siv. Nws tsis tshua muaj, tab sis pom nyob rau hauv cov qib high-grade metamorphic pob zeb ntawm Madagascar. Qee cov khoom noj ua rau cov khoom qub tuaj muaj cov kab mob hibonite. Hibonite kuj yog ib qho ntxhia hauv Ca-Al-cov cuab yeej cuab tam (CAIs) muaj nyob rau hauv qee cov chondritic meteorites. Hibonite zoo ib yam li hibonite-Fe (IMA 2009-027, ((Fe, Mg) Al12O19)) hloov cov ntxhiab ntawm lub Allene meteorite.

Ib lub pov haum tsis tshua muaj lub npe, Lub npe tom qab Paul Hibon, lub hom phiaj ntawm Fabkis txoj hauv Madagascar, uas nrhiav tau lub pob zeb hauv Xune 1953. Nws xa ib pob khoom nrog ib co kuaj mus rau Jean Behier rau kev xeem nyob rau hauv tib lub xyoo. Behier pom tau tias nws yog ib qhov ua tau tshiab thiab nws ua haujlwm "hibonite". Nws xa cov qauv mus rau C. Guillemin, Labratoire tsib Minéralogie de la Sorbonne, nyob rau Paris, Fabkis kom tau sojntsuam ntxiv. Nws tau nyob rau hauv ib qho kev piav qhia ntawm cov tshiab cov ntxhia los ntawm Curien li al (1956).

Hibonite los ntawm Esiva, Fort Dauphin cheeb tsam, Tuléar, Madagascar
Dub, tawv crystals tshem tawm hauv metamorphosed limestone matrix nplua nuj hauv calcic palgioclase. Cov neeg koom nrog ua ke hauv cov duab xis yog cov txha caj dab, kev txheeb ze thiab cov kev xav. Piav nyob hauv 1956. Tsis xav kom meej meej nrog Hibbenite. Hibonite muaj npe tom qab P. Hibon, uas nrhiav tau cov ntxhia hauv pob zeb.

General

Qeb: Oxide cov zaub mov
Lub mis: (Ca, Ce) (Al, Ti, Mg) 12O19
Crystal cev: Hexagonal
Crystal hoob kawm: Dihexagonal dipyramidal (6 / mmm)
HM cim: (6 / m 2 / m 2 / m)

Identification

Xim: Muab xim dub rau dub; reddish xim av nyob rau hauv nyias thooj plawv; xiav nyob rau hauv cov xwm txheej meteorite
Crystal cwj pwm: Prismatic platy rau ntxhab pyramidal muaju
Txhav: {0001} zoo, {1010} txoj
Qee zaus: Subconchoidal
Mohs nplai nyuaj: 7½-8
Luster: Vitreous
Zais: reddish xim av
Diaphaneity: Semitransparent
Kev ntiajteb txawj nqus: 3.84
Optical zog: Uniaxial (-)
Refractive index: n = 1.807 (2), n = 1.79 (1)
Pleochroism: O = brownish grey; E = txho

Hibonite, los ntawm Madagascar

yuav natural gemstones hauv peb lub khw

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kev ua yuam kev: Cov ntsiab lus yog kev tiv thaiv !!