Agate geode

Agate

Gemstone Info

Gemstone Nqe Lus

0 shares

Agate geode

Yuav cov gemstones hauv ntuj hauv peb lub khw


Agate yog pob zeb muaj feem ntau ntawm cov twj cryptocrystalline silica, chiefly chalcedony, alternating nrog crystalline quartz. Nws yog pom los ntawm nws cov fineness ntawm grain thiab ntau yam xim. Txawm hais tias peb pom agates hauv ntau hom tswv tsev pob zeb. Peb feem ntau pom nws nrog pob zeb volcanic. Thiab nws tuaj yeem tshwm sim nyob rau qee cov kab mob metamorphic.

Feem ntau cov agates tshwm sim li nodules nyob rau hauv volcanic pob zeb los yog ancient lavas. Nyob rau hauv qub cavities tsim los ntawm volatiles nyob rau hauv thawj molten loj. Nws tau ntim tom qab, tseem ntuag lossis ib ntus, los ntawm qhov teeb meem uas muaj siliceous. Nyob rau hauv txheej tsev li ntawm phab ntsa. Agate tuaj yeem ua rau cov leeg los yog cov kab nrib pleb, hauv volcanic los yog hloov pob zeb ua underlain los ntawm granitic intrusive masses. Xws li cov agates, thaum muab txiav tawm, pom ib qho kev sib txuas ntawm cov kab khiav ua haujlwm. Nws yog feem ntau ntawm kev tenuity heev. Nws muab cov duab zoo nkauj rau hauv seem. Tej pob zeb no yog banded agate, kuj riband agate thiab striped agate.

Nyob rau hauv lub tsim ntawm ib qho dog dig agate, nws yog tshwm sim uas dej muaj silica nyob rau hauv kev daws muab. Tej zaum, los ntawm kev lwj siab ntawm qee cov silicates nyob rau hauv lub lava nws tus kheej. Nws percolates los ntawm lub pob zeb thiab tso ib tug siliceous gel nyob rau sab hauv ntawm vesicles. Variations nyob rau hauv lub cim ntawm kev daws los yog tseem nyob rau hauv tej yam kev mob ntawm deposition. Nws yuav ua rau muaj qhov sib txawv ntawm qhov sib txawv hauv cov theem txheej txheem. Yog li ntawd cov bands ntawm chalcedony feem ntau alternate nrog txheej ntawm crystalline quartz.

Geode

agate geodes yog cov geological secondary qauv uas tshwm sim hauv qee qhov sedimentary thiab volcanic pob zeb. Lawv yog lawv tus kheej ntawm sedimentary keeb kwm thiab ib txwm ua los ntawm cov tshuaj nag lossis daus. Geodes yog hollow, vaguely spheroid rau oblate loj heev ntawm pob zeb hauv av teeb meem. Nws yuav muaj xws li muaju. Nws yog daim ntawv los ntawm kev ua tiav ntawm cov hlwv nyob rau hauv volcanic rau sub volcanic pob zeb los ntawm cov ntxhia tso. Los ntawm cov kua dej hydrothermal lossis los ntawm kev txhim kho ntawm kev tsis quav ntsej nodules los yog syngenetic concretions. Thiab ib nrab sau los ntawm cov qub los yog tseem muaj lwm yam minerals. Nws yog precipitated los ntawm diagenetic dej, kuj dej hauv av lossis dej kua hydrothermal.

agate geodes txawv ntawm vugs hauv daim ntawv. Nws daim ntawv los thaum ntxov, npawv. Lawv cov qauv nyob rau hauv cov pob zeb puag ncig. Geodes kuj txawv ntawm nodules. Ib qhov hnoos qeev yog qhov loj ntawm cov pob zeb hauv av uas tau ua pov thawj nyob ib ncig ntawm lub hnoos qeev muaj. Ob lub vaj tse muaj cov khoom pov tseg nyob hauv, tso tawm hauv av los yog cov txheej txheem dej

Agate geode


Yuav cov gemstones hauv ntuj hauv peb lub khw

0 shares
kev ua yuam kev: Cov ntsiab lus yog kev tiv thaiv !!