Natrual Gems Yellow Garnet Round 3.0mm

Tsatanetsatane wa Zamalonda:

Garnet, yotchedwa ziyawu kapena ziyawu ku China wakale, ndi gulu la mchere lomwe lakhala likugwiritsidwa ntchito ngati miyala yamtengo wapatali ndi abrasives m'zaka zamkuwa.Garnet wamba ndi wofiira.Garnet English "garnet" amachokera ku Latin "granatus" (tirigu), omwe angachokere ku "Punica granatum" (makangaza).Ndi chomera chokhala ndi njere zofiira, ndipo mawonekedwe ake, kukula kwake ndi mtundu wake ndi ofanana ndi makhiristo a garnet.
Ma garnet wamba amagawidwa m'mitundu isanu ndi umodzi molingana ndi kapangidwe kake ka mankhwala, pyrope, almandine, spessartite, andradite, Grossular, ndipo mitunduyo ndi tsavorite, Hessonite, ndi uvarovite.Garnet imapanga njira ziwiri zolimba: (1) garnet yofiira yachitsulo aluminium garnet manganese aluminium garnet ndi;(2) Calcium chromium garnet calcium aluminium garnet calcium iron garnet.Garnet alibe kusiyana kwa kalasi padziko lapansi.Otchedwa “A” amasiyanitsidwa malinga ndi malingaliro a munthu.Garnet yemweyo amatha kudziwa manambala osiyanasiyana m'manja osiyanasiyana.[1]

Zigawo zikuluzikulu:

Mankhwala a garnet ndi ovuta, ndipo zinthu zosiyana zimapanga mitundu yosiyanasiyana, kotero kuti mndandanda wa mabanja a garnet omwe ali ndi maonekedwe ofanana ndi fano amapangidwa.The general formula is a3b2 (SiO4) 3, pomwe a amaimira divalent elements (calcium, magnesium, iron, manganese, etc.) ndi B amaimira trivalent elements (aluminium, iron, chromium, titanium, vanadium, zirconium, etc.).Ambiri ndi magnesia aluminiyamu garnet, yomwe ili ndi chromium ndi zinthu zachitsulo ndipo ndi magazi ofiira, purplish wofiira ndi maroon;Yachiwiri ndi chitsulo cha aluminiyamu garnet, chomwe ndi purplish red.The krustalo ndi kuphatikizika chitukuko akhoza kusema anayi-dimensional starlight;Magnesium iron garnet ndi mtundu wofiirira wofiirira, womwe ndi umodzi mwamitundu yofunikira ya miyala yamtengo wapatali ya garnet;Calcium aluminiyamu garnet ali ndi trace vanadium ndi chromium ayoni, choncho amatchedwa top-grade wobiriwira mitundu.
Chifukwa cha ma radius ofanana a ma trivalent cations, m'malo mwa isomorphic ndikosavuta kuchitika pakati pawo.Ma divalent cations ndi osiyana.Chifukwa CA ili ndi radius yokulirapo kuposa mg, Fe ndi Mn plasma, ndizovuta kuyisintha ndi isomorphism.Chifukwa chake, garnet nthawi zambiri imagawidwa m'magulu awiri:
(1) Aluminiyamu mndandanda: mg3al2 (SiO4) 3 - fe3al2 (SiO4) 3 - mn3al2 (SiO4) 3
Ndi mndandanda wa isomorphic wopangidwa ndi ma divalent cations monga Mg, Fe ndi Mn okhala ndi ma radius ang'onoang'ono komanso ma cations ang'onoang'ono monga al.Mitundu yodziwika bwino ndi garnet ya magnesium aluminium, iron aluminium garnet ndi manganese aluminium garnet.
(2) Mndandanda wa Calcium: ca3al2 (SiO4) 3 - Ca3Fe2 (SiO4) 3 - ca3cr2 (SiO4) 3
(3) Ndi mndandanda wa isomorphic womwe umayendetsedwa ndi divalent cation CA yokhala ndi radius yayikulu.Zodziwika bwino ndi calcium aluminium garnet, calcium iron garnet ndi calcium chromium garnet.Kuonjezera apo, lattice ya ma garnets amamangirizidwanso ndi ma OH ions kuti apange ma subspecies amadzimadzi, monga madzi a calcium aluminium garnet.Chifukwa cha kusintha kwakukulu kwa isomorphic, mankhwala a garnet nthawi zambiri amakhala ovuta kwambiri.Mapangidwe a garnet m'chilengedwe nthawi zambiri amakhala kusintha kwa isomorphic substitution, ndipo pali ma garnet ochepa omwe ali ndi zigawo zomalizira.[2]