Qhov sib txawv tseem ceeb ntawm biotite thiab hornblende yog biotite tau yooj yim tsim cov ci ntsa iab dub zoo meej thiab tuaj yeem tev rau hauv flakes, hos hornblende tsis flake.
Biotite thiab hornblende zoo ib yam, thiab ob qho tib si cov zaub mov no cuam tshuam nrog cov pab pawg ua haujlwm silicate. Txawm li cas los xij, muaj qhov sib txawv ntawm biotite thiab hornblende, raws li tau tham hauv qab no.
YBiotite yog dab tsi?
Biotite yog ib hom phyllosilicate ntxhia hauv pawg mica, thiab nws muaj cov tshuaj formula K(Mg, Fe)3AlSi3 O10(F, OH)2 Feem ntau, nws tshwm sim raws li kev daws teeb meem thiab tshwm sim ntawm cov hlau-endmember annite thiab magnesium- endmember phlogopite. Cov tswv cuab ntawm pawg biotite mineral muaj xws li daim ntawv silicates. Cov khoom siv tshuaj xws li hlau, magnesium, txhuas, silicon, oxygen, thiab hydrogen tuaj yeem tsim cov ntawv silicate. Cov atoms ntawm cov tshuaj no tsis muaj zog ua ke los ntawm potassium ions.
Cov pob zeb no muaj cov kab ke monoclinic siv lead ua, thiab nws nyob hauv chav kawm prismatic (2/m) siv lead ua. Qhov chaw ntawm cov pob zeb no yog C2 / m. Thaum xav txog cov tsos ntawm biotite ntxhia, nws tshwm nyob rau hauv tsaus xim av, greenish-xim av, blackish xim av, daj ntawm dawb xim. Nws muaj ib qho chaw siv lead ua uas loj heev rau platy. Biotite ntxhia muaj pob txha micaceous thiab tshwm sim nyob rau hauv nkig rau saj zawg zog, elastic tenacity. Lub hardness ntawm cov ntxhia no tuaj yeem nyob ntawm 2.5 txog 3.0 ntawm Mohs nplai. Ntxiv mus, biotite muaj vitreous rau pearly luster, thiab streak xim yog dawb.
Feem ntau, biotite muaj qhov zoo tshaj plaws basal cleavage, thiab nws muaj cov nplooj ntawv hloov tau yooj yim lossis lamellae uas yooj yim flakes tawm, uas yog cov cuab yeej zoo sib xws rau feem ntau ntawm cov zaub mov mica. Ntxiv mus, biotite muaj tabular rau prismatic crystals muaj pom tseeb pinacoid txiav. Muaj plaub lub ntsej muag prism, thiab ob lub ntsej muag pinacoid tsim pseudoxagonal crystals.
Tsis tas li ntawd, cov ntxhia no tuaj yeem yaj hauv cov kua qaub thiab alkaline aqueous daws. Nws muaj qhov sib cais siab tshaj plaws hauv cov kev daws teeb meem ntawm pH qis. Tab sis qhov kev sib cais no yog anisotropic heev nrog crystal ntug nto uas yog reacting 45 mus rau 132 lub sij hawm sai dua lub basal nto.
Daim duab 01: Pom ntawm Biotite
Muaj qee qhov kev siv biotite uas suav nrog kev txwv lub hnub nyoog ntawm pob zeb los ntawm kev sib tam potassium-argon lossis argon-argon yos. Qhov no yog vim hais tias argon tuaj yeem khiav tawm ntawm cov qauv siv lead ua biotite ntawm qhov kub thiab txias heev. Ntxiv mus, cov ntxhia no muaj txiaj ntsig zoo hauv kev ntsuas qhov kub thiab txias keeb kwm ntawm cov pob zeb metamorphic.
Hornblende yog dab tsi?
Hornblende yog ib qho nyuaj inosilicate series ntawm cov zaub mov. Cov tshuaj formula rau cov ntxhia no yog Ca2(Mg, Fe, Al)5(Al, Si)8 O22(OH)2 Cov pob zeb no muaj cov kab ke monoclinic siv lead ua thiab nyob hauv pawg C2 / m. Txawm hais tias cov qauv tshuaj saum toj no tau muab rau cov pob zeb no, cov khoom sib xyaw ntawm cov hlau hauv cov pob zeb no tuaj yeem sib txawv nyob ntawm qhov tshwm sim thiab qhov loj. Piv txwv li, manganese thiab titanium thiab feem ntau muaj nyob rau hauv cov ntxhia no.
Hornblende tshwm hauv cov xim dub rau ntsuab tsaus lossis xim av xim av. Nws muaj hexagonal / granular siv lead ua qhov chaw nyob qhov twg qhov tawg ntawm cov pob zeb no tsis sib xws. Lub hardness ntawm hornblende yog nyob rau hauv thaj tsam ntawm 5.0 txog 6.0 ntawm Mohs nplai. Nws muaj lub vitreous rau npub luster thiab daj ntseg grey rau xim tsis muaj pob zeb hauv av streak xim.
Daim duab 02: Qhov tshwm sim ntawm Hornblende
Txawm li cas los xij, cov ntxhia no muaj ob peb siv piv rau lwm cov ntaub ntawv ntxhia. Feem ntau, cov ntxhia no muaj txiaj ntsig zoo li cov khoom siv ntxhia. Hornblende tshwm sim nyob rau hauv amphibolite pob zeb abundantly. Cov pob zeb no muaj txiaj ntsig zoo hauv kev tsim kho kev loj uas lawv siv rau hauv daim ntawv crushed.
Dab tsi yog qhov zoo sib xws ntawm Biotite thiab Hornblende
- Biotite thiab hornblende yog silicate minerals.
- Lawv muaj hlau atoms.
- Ob leeg muaj qhov zoo sib xws.
Qhov txawv ntawm Biotite thiab Hornblende yog dab tsi?
Biotite yog ib hom phyllosilicate ntxhia hauv pawg mica, thiab nws muaj cov tshuaj formula K(Mg, Fe)3AlSi3 O10(F, OH)2, hos Hornblende yog ib qho complex inosilicate series ntawm minerals. Qhov sib txawv tseem ceeb ntawm biotite thiab hornblende yog tias biotite tau yooj yim tsim cov xim dub cleavage zoo meej thiab tuaj yeem tev rau hauv flakes, hos hornblende tsis flake.
Cov hauv qab no infographic tabulates qhov sib txawv ntawm biotite thiab hornblende nyob rau hauv daim ntawv tabular.
Summary – Biotite vs Hornblende
Biotite thiab hornblende tshwm sim zoo sib xws thiab cuam tshuam nrog cov pab pawg ua haujlwm silicate. Qhov sib txawv tseem ceeb ntawm biotite thiab hornblende yog tias biotite tau yooj yim tsim cov ci iab dub zoo meej thiab tuaj yeem tev rau hauv flakes, hos hornblende tsis flake.
