Hibonite, wochokera ku Madagascar

Hibonite Madagascar

Info Project

Kufotokozera Project

Hibonite, wochokera ku Madagascar

kanema

Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19) ndi mchere wandiweyani wakuda wolimba wakuda wa 7.5-8.0 ndi kapangidwe ka kristalo kakang'ono. Zili zochepa, koma zimapezeka mumatengo apamwamba a metamorphic ku Madagascar. Mbewu zina zosungira meteorite zakuda zimakhala ndi hibonite. Hibonite imakhalanso ndi mchere wambiri ku Ca-Al-rich inclusions (CAIs) omwe amapezeka m'ma meteorites ena a chondritic. Hibonite ndi ofanana kwambiri ndi hibonite-Fe (IMA 2009-027, ((Fe, Mg) Al12O19)) mchere wosinthika kuchokera ku mvula yonse ya Allende.

Chinthu chochepa kwambiri, Chotchedwa Paul Hibon, yemwe akuyang'ana ku France ku Madagascar, yemwe adapeza mchere mu June 1953. Anatumiza chidutswa ndi zitsanzo zina kwa Jean Behier kuti afufuze chaka chomwecho. Behier anazindikira kuti akhoza kukhala mchere watsopano ndipo anaupatsa dzina lakuti "hibonite". Anatumiza chitsanzo kwa C. Guillemin, Labratoire de Minéralogie de la Sorbonne, ku Paris, France kuti adziwe zambiri. Izi zinachititsa kuti Curien et al (1956) adziwe zachitsulo chatsopanocho.

Hibonite kuchokera ku Esiva, dera la Fort Dauphin, ku Tuléar, ku Madagascar
Mdima wakuda, makatani oumitsa amaimitsidwa mumatumbo a miyala yamchere omwe amapezeka mu calcic palgioclase. Otsatira omwe angakhalepo mkati mwa masewerawa ndi corundum, spinel ndi thorianite. Kufotokozedwa mu 1956. Osati kusokonezedwa ndi Hibbenite. Hibonite amatchulidwa ndi P. Hibon, amene anapeza mchere.

General

Chigawo: Mchere wamchere
Fomu: (Ca, Ce) (Al, Ti, Mg) 12O19
Crystal dongosolo: Hexagonal
Kalasi ya Crystal: Diyxagonal dipyramidal (6 / mmm)
Chizindikiro cha HM: (6 / m 2 / m 2 / m)

Chizindikiro

Mtundu: Brownish wakuda wakuda; wofiira bulauni mu zidutswa zochepa; buluu mu meteorite zochitika
Chizoloŵezi cha Crystal: Plymatic platy kuti ikhale yopanda piramidi
Cleavage: {0001} zabwino, {1010} akugawa
Kuphulika: Subconchoidal
Mohs kulemera kwachangu: 7½-8
Lusita: Vitreous
Mzere: pabuka bulauni
Diaphaneity: Yophatikizapo
Specific yokoka: 3.84
Zida zokongola: Uniaxial (-)
Chizindikiro cha refractive: nω = 1.807 (2), nε = 1.79 (1)
Pleochroism: O = yofiira imvi; E = imvi

Hibonite, wochokera ku Madagascar

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