Hibonite, si Madagascar

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Hibonite, si Madagascar

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Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19 bụ mineral ojii na-acha uhie uhie na-enwe ike nke 7.5-8.0 na usoro ikuku crystal. Ọ bụ obere, ma achọtara ya na nkume dị elu na akwa Madagascar. Ụfọdụ mkpụrụ osisi na-emepụta ihe na meteorites oge ochie gụnyere hibonite. Hibonite bụkwa ihe ịnweta nkịtị na Ca-al-rich inclusions (CAIs) dị na ụfọdụ meteorites chondritic. Hibonite nwere njikọ chiri anya na hibonite-Fe (IM, 2009-027, ((Fe, Mg) Al12O19)) ihe na-agbanwe agbanwe site na Allende meteorite.

A na-ahụkarị obere ihe, aha ya bụ Paul Hibon, onye na-atụgharị anya na Madagascar, onye chọpụtara ịnweta na June 1953. O zigara ụfọdụ n'ime ihe ndị dị na Jean Behier maka nnyocha otu afọ ahụ. Behier ghọtara na ọ bụ ihe ịnweta ịnweta ọhụụ wee nye ya aha ọrụ "hibonite". Ọ zigara C Guillemin, Labratoire de Minéralogie de la Sorbonne, na Paris, France ka a nyochaa ya ọzọ. O mere ka a kọwapụta mpempe akwụkwọ ọhụrụ site Curien et al (1956).

Hibonite si Esiva, Fort Dauphin, Tuléar, Madagascar
Black, kristal siri ike na-anọchi anya na matrix stallus bara ọgaranya na calcic palgioclase. Ndị mmekọ nwere ike ịbanye n'ime matrik ahụ bụ corundum, spinel na thorianite. Edere na 1956. Ekwela ka mgbagwoju anya na Hibbenite. A na-akpọ Hibonite aha P. Hibon, onye chọpụtara ịnweta.

General

Udi: mineral oxide
Usoro: (Ca, Ce) (Al, Ti, Mg) 12O19
Atụmatụ Crystal: Hexagonal
Klaasị: Dihexagonal dipyramidal (6 / mmm)
HM akara: (6 / m 2 / m 2 / m)

Identification

Agba: Nwa oji oji; acha ọbara ọbara na-acha aja aja na mkpịsị ụkwụ; acha anụnụ anụnụ n'ihe omume meteorite
Ụdị Crystal: Prismatic na-eme ka nkume cristal pyramidal dị elu
Ịgba chaa chaa: {0001} dị mma, {1010} nkewa
Ngbawa: Subconchoidal
Ikwasi ike nke Mohs: 7½-8
Luster: Vitreous
Esi ike: acha aja aja
Diaphaneity: Na-enweghi otu
Specific ndọda: 3.84
Njirimara anya: Uniaxial (-)
Ntughari ntughari: nω = 1.807 (2), nt = 1.79 (1)
Pleochroism: O = agba aja aja; E = isi awọ

Hibonite, si Madagascar

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