Hibonite, wokuMadagascar

Hibonite Madagascar

Gemstone Info

Gemstone Tsanangudzo

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Hibonite, wokuMadagascar

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Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19) inonzi brownish yakawanda yemaminerari ine uoma hwe 7.5-8.0 uye yakagadzika kristani yakarongeka. Hazviwanzoiti, asi zvinowanika mupamusoro-grade metamorphic matombo kuMadagascar. Zvimwe zvinopararira zviyo mumameteorite epakutanga zvinosanganisira hibonite. Hibonite zvakare inowanzoita mineral muC Ca-Al-rich inclusions (CAIs) inowanikwa kune dzimwe chondritic meteorites. Hibonite inowirirana zvikuru ne hibonite-Fe (IMA 2009-027, ((Fe, Mg) Al12O19)) kushanduka kwemaminera kubva muMorite Allende.

Chinhu chisingawanzozivikanwi, Chinozivikanwa mushure mePaul Hibon, mumwe muFrance anotarisira kuMadagascar, uyo akawana mineral munaJune 1953. Akatumira chikamu nemamwe mapikicha kuna Jean Behier pakuongorora mugore iroro. Behier akazviziva sechinhu chinogona kuitika mutsva uye akachipa zita rinoshanda "hibonite". Akaendesa shanduro kuna C. Guillemin, Labratoire de Minéralogie de la Sorbonne, muParis, France kuti iongororwe zvakare. Izvozvo zvakaguma mukutsanangurwa kwezvicherwa zvitsva naCurien et al (1956).

Hiboniti kubva kuSivha, Fort Dauphin, Tuléar, Madagascar
Dema, makristani akaoma akamira mumatamorphosed chimestone matrix akapfuma mu calcic palgioclase. Shamwari dzinonzwisisika mukati mechiratidzo chiri corundum, spinel uye thorianite. Yakatsanangurwa mu 1956. Kwete kuti urege kuvhiringidzwa neHibbenite. Hibonite anonzi anonzi P. Hibon, uyo akawana mineral.

General

Chikamu: Oxide minerals
Formula: (Ca, Ce) (Al, Ti, Mg) 12O19
Crystal system: Hexagonal
Crystal class: Dihexagonal dipyramidal (6 / mmm)
HM chiratidzo: (6 / m 2 / m 2 / m)

Chiratidzo

Mucherechedzo: Brownish mutsvuku kusvika kumuvara; tsvuku tsvuku muzvimedu zviduku; bhururu mu meteorite zviitiko
Mitiro weCriststal: Plymatic platy kusvika pamapiramidal mashizha
Cleavage: {0001} yakanaka, {1010} kugovana
Kutyoka: Subconchoidal
Mohs kuwedzera kuoma: 7½-8
Luster: Vitreous
Nzira: tsvuku tsvuku
Dhiyabhorosi: Yakasiyana
Dzakananga giravhiti: 3.84
Optical properties: Uniaxial (-)
Refractive index: nω = 1.807 (2), n = = 1.79 (1)
Pleochroism: O = yakaoma grey; E = grey

Hibonite, wokuMadagascar

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