Forsterite Mg2SiO4
Zamkatimu:
Gulani miyala yachilengedwe m'sitolo yathu
mineral forsterite
Ndilo gawo lakumapeto lolemera kwa magnesium pagulu la olivine solid solution. Ndi isomorphic kupita ku fayalite yokhala ndi chitsulo yokhala ndi chitsulo chopangidwa ndi orthorhombic.
Takhala tikukhulupirira kuti forsterite imagwirizana ndi miyala ya igneous ndi metamorphic. Tinazipezanso mu meteorites. Mu 2005, idapezekanso mu fumbi la cometary lomwe linabwezedwa ndi kafukufuku wa Stardust. Mu 2011, zidawoneka ngati tinthu tating'onoting'ono tamtambo wafumbi wozungulira nyenyezi yomwe ikutuluka.
Pali ma polymorphs awiri a mwala uwu. Wadsleyite, rhombic, ngati ringwoodite, isometric. Zonsezi zimachokera makamaka kuchokera ku meteorites.
Krustalo koyera ndi magnesium, komanso mpweya ndi silicon. Chemical formula Mg2SiO4. Forsterite, fayalite Fe2SiO4 ndi tephroite Mn2SiO4 ndi mamembala omaliza a mndandanda wa mayankho a olivine. Zinthu zina monga Ni ndi Ca m'malo mwa Fe ndi Mg mu olivini. Koma pang'onopang'ono muzochitika zachilengedwe.
Maminolo ena monga monticellite CaMgSiO4. Mchere wachilendo wolemera mu calcium uli ndi mawonekedwe a olivine. Koma pali njira yochepa yolimba pakati pa olivine ndi mchere wina. Titha kupeza monticellite pokhudzana ndi ma dolomites osinthika.
Mapangidwe a Forsterite: Mg2SiO4
Zomwe zimapangidwira makamaka anion SiO44- ndi cation Mg2+ mu chiŵerengero cha molar cha 1: 2. Silicon ndiye atomu yapakati ya SiO44-anion. Chomangira chimodzi chokhazikika chimalumikiza atomu iliyonse ya okosijeni ku silicon. Ma atomu anayi a okosijeni ali ndi mphamvu zochepa.
Chifukwa cha mgwirizano wogwirizana ndi silicon. Choncho, maatomu a oxygen ayenera kukhala otalikirana. Kuchepetsa mphamvu yakukaniza pakati pawo. Geometry yabwino kwambiri yochepetsera kukhumudwa ndi mawonekedwe a tetrahedral.
Izi zidafotokozedwa koyamba mu 1824 pamilandu paphiri. Somma, Vesuvius, Italy. Dzina lake limachokera kwa katswiri wazachilengedwe wachingerezi komanso wosonkhanitsa mchere Adolarius Jacob Forster.
Mwalawu ukufufuzidwa pakali pano ngati biomaterial yopangira ma implants. Chifukwa kwambiri makina katundu.
Gemological katundu
- Category: mesosilicates
- Fomula: magnesium silicate (Mg2SiO4)
- Diamondi crystal system
- Gulu la Crystal: dipyramidal
- Mtundu: wopanda mtundu, wobiriwira, wachikasu, wachikasu-wobiriwira, woyera;
- Maonekedwe a makhiristo: ma prisms a dipyramidal, nthawi zambiri amakhala amtundu, nthawi zambiri amakhala granular kapena yaying'ono, yayikulu.
- Kugwirizana pawiri: {100}, {011} ndi {012}
- Mzere wapakhosi: wabwino kwa {010} wopanda ungwiro kwa {100}
- Fracture: conchoidal
- Kulimba kwa Mohs: 7
- Luster: vitreous
- Mzere: woyera
- Transparency: translucent
- Kuchuluka Kwapadera: 3.21 - 3.33
- Zowoneka bwino: biaxial (+)
- Refractive index: nα = 1.636 - 1.730 nβ = 1.650 - 1.739 nγ = 1.669 - 1.772
- Birefringence: δ = 0.033–0.042
- Ngodya 2B: 82°
- Malo osungunuka: 1890 ° C
forsterite tanthauzo ndi mankhwala, metaphysical phindu
Gawo lotsatirali ndi sayansi yabodza komanso yozikidwa pazikhulupiliro za chikhalidwe.
Krustalo ili ndi tanthauzo komanso machiritso a mabala akale. Ndi mwala wamtengo wapatali wokhala ndi mphamvu zochiritsa. Izi zidzathetsa ululu umene umakhalapo kuyambira kale. Zimakupatsaninso mphamvu yoyang'ana zam'tsogolo.
FAQ
Kodi ntchito za forsterite ndi ziti?
Monga miyala yamtengo wapatali yogwiritsidwa ntchito m'mafakitale monga mchenga wotsutsa ndi abrasives, magnesium ore ndi zitsanzo za mchere. Krustaloyo imatchedwa dzina la katswiri wa zachilengedwe waku Germany Johann Forster. Ndi imodzi mwazinthu ziwiri zomwe zimangotchulidwa kuti olivine. Mchere wachiwiri ndi fayalite.
Kodi pali kusiyana kotani ndi fayalite?
Fayalite ndi thanthwe lolemera chitsulo chokhala ndi fomula yoyera Fe2SiO4. Forsterite ndi chinthu chokhala ndi magnesium chokhala ndi mawonekedwe oyera a Mg2SiO4. Apo ayi, zimakhala zovuta kuzisiyanitsa, ndipo pafupifupi zitsanzo zonse za mchere ziwirizi zimakhala ndi chitsulo ndi magnesium.
Kodi forsterite imakumbidwa kuti?
Mwalawu umapezeka kawirikawiri mu dunites, gabbras, diabases, basalts ndi trachytes. Ma fayalite ochepa amapezeka m'miyala yambiri yamapiri pomwe sodium imakhala yofala kwambiri kuposa potaziyamu. Michere imeneyi imapezekanso mu miyala ya miyala ya dolomitic, miyala ya marble, ndi ma metamorphoses okhala ndi chitsulo.
Momwe mungawerengere zomwe zili mu olivine mu forsterite?
Chiwembu cha olivine-forsterite zili (Fo = 100 * Mg / (okwana Mg + Fe), kuchuluka kwa cations) ndi kuchuluka kwa Ca cations (mineral chilinganizo zochokera maatomu anayi mpweya).
Siyani Mumakonda