Opal los ntawm Mondulkiri, Cambodia - Hloov tshiab 2022 - Video

Yuav ntuj opal hauv peb lub khw gemstone

Cambodian opal

Opal yog hydrated amorphous daim ntawv ntawm silica (SiO2 nH2O); Nws cov ntsiab lus dej tuaj yeem sib txawv ntawm 3 mus rau 21% los ntawm qhov hnyav, tab sis feem ntau yog 6 mus rau 10%. Vim nws qhov xwm txheej amorphous, nws raug cais raws li mineraloid, nyob rau hauv sib piv rau cov crystalline cov ntaub ntawv ntawm silica, uas yog cais raws li cov minerals.

Nws yog tso rau ntawm qhov kub thiab txias thiab tuaj yeem pom nyob rau hauv qhov chaw ntawm yuav luag txhua hom pob zeb, feem ntau tshwm sim nrog limonite, sandstone, rhyolite, marl, thiab basalt. Opal yog lub teb chaws gemstone ntawm Australia.

Cov qauv sab hauv ntawm playful xim ntawm opal ua rau nws refract lub teeb. Nyob ntawm cov xwm txheej uas nws tau tsim, nws tuaj yeem ua rau ntau xim. Lub pob zeb muaj ntau yam ntawm cov xim dawb, grey, liab, txiv kab ntxwv, daj, ntsuab, xiav, ntshav, liab, liab, slate, txiv ntseej, xim av thiab dub.

Ntawm cov ntxoov no, cov pob zeb dub yog qhov tsawg tshaj plaws, thaum dawb thiab ntsuab yog qhov ntau tshaj. Opals sib txawv nyob rau hauv optical ceev ntawm opaque mus rau translucent.

Opal kev ua si ntawm cov xim qhia tau hais tias qhov sib txawv ntawm qhov sib txawv ntawm cov xim sab hauv thiab, txawm tias ib qho mineraloid, muaj cov qauv sab hauv. Ntawm cov nplai me me, cov xim ua si opal yog tsim los ntawm silica spheres 150 mus rau 300 nm nyob rau hauv txoj kab uas hla nyob rau hauv ib tug tuab hexagonal los yog cubic daim phiaj.

JW Sanders tau qhia nyob rau hauv nruab nrab-1960s tias cov quartz spheres tau tsim cov xim sab hauv los ntawm kev cuam tshuam thiab cuam tshuam ntawm lub teeb hla dhau ntawm opal microstructure.

Qhov loj thiab ntim ntawm cov hlaws dai no txiav txim siab qhov zoo ntawm pob zeb. Thaum qhov kev ncua deb ntawm cov dav hlau tsis tu ncua ntawm cov spheres yog li ntawm ib nrab ntawm lub wavelength ntawm lub teeb pom kev zoo, lub teeb ntawm lub wavelength tuaj yeem cuam tshuam los ntawm cov grating tsim los ntawm cov dav hlau stacked.

Cov xim pom tau yog txiav txim siab los ntawm qhov kev ncua deb ntawm cov dav hlau thiab kev taw qhia ntawm cov dav hlau nrog rau qhov teeb meem teeb meem. Cov txheej txheem no tuaj yeem piav qhia los ntawm txoj cai Bragg diffraction.

Opal los ntawm Mondulkiri, Cambodia.

Yuav ntuj opal hauv peb lub khw gemstone