Nepheline tsuas yog tsim hauv silica-pob pob zeb. Nws yuav luag tsis cuam tshuam nrog quartz. Nws tuaj yeem pom nyob rau hauv qee qhov sib cuag metamorphosed pob zeb txwv tsis pub nws tshwm sim hauv alkaline complexes hauv cov pob zeb tsis pom kev. Nepheline feem ntau pom nyob rau hauv pob zeb Nepheline Syenite nyob rau hauv xwm.
Koj tuaj yeem qhia qhov txawv ntawm quartz thiab nepheline li cas?
Raws li feldspars tab sis nepheline yog uniaxial, tsis muaj kev sib cais zoo thiab ntxaib, thiab muaj qhov sib txawv tsawg. Nepheline yog softer dua quartz thiab sib txawv ntawm optic kos npeNepheline tshwm sim hauv alkali-nplua nuj, silicon pluag pob zeb tsis zoo (nepeline syenite, foidite thiab phonolite).
Nepheline yog dab tsi?
Nepheline, tseem hu ua nephelite, lossis eleolite, ntau tshaj plaws feldspathoid mineral , aluminosilicate ntawm sodium thiab potassium [(Na, K)AlSiO 4]. Nws yog qee zaum siv los hloov feldspars hauv kev tsim cov iav thiab ceramics.
Nepheline pob zeb yog dab tsi?
Nepheline, tseem hu ua nephelite (los ntawm Ancient Greek νεφέλη (nephélē) 'huab'), yog pob zeb tsim pob zeb hauv pawg feldspathoid - silica-undersaturated aluminosilicate, Na 3 KAl4Si4O16, uas tshwm sim nyob rau hauv intrusive thiab volcanic pob zeb nrog tsawg silica, thiab nyob rau hauv lawv cov pegmatites txuam.
Nepheline puas yog pob zeb lossis pob zeb?
Nepheline yog ib qho tseem ceeb feldspathoid ntxhiaNws yog xim dawb, grey lossis daj nrog lub vitreous luster thiab tsis zoo cleavage. Lub npe Nepheline los ntawm Greek lo lus nephele, uas txhais tau hais tias "huab," vim tias nws yuav dhau los ua huab cua thaum muab tso rau hauv cov kua qaub. Nepheline tsuas yog tsim nyob rau hauv silica-pob pob zeb.
