Chii girenayiti, uye apo inowanikwa zvakasikwa

Kana mukakumbira kokutanga iripo munhu, chii dombo iri, yake mafungiro, zvikuru nesimba, zviri zvikuru kunge kutaura kuti girenayiti. Ibwe chicherwa ichi zvikukutu chaizvo uye zvinoshanda, uyewo zvikuru chitarisiko, uye saizvozvo rinowanzoshandiswa rokuvaka. Uyezve, kazhinji akashandisa kusika dzakasiyana-siyana decoration okunze, kusanganisira sezvivako. rudzi zita rinobva muchiLatin shoko «granum», iyo kunan'anura "zviyo".

Chii girenayiti

The chikuru zvinoumba ichi kwakapararira munyika panyika dombo vari feldspar uye Goldstone. Zvinoita sokuti girenayiti ibwe? Photos uye kurondedzerwa rakasiyana-siyana rudzi vanoti ibwe iri zvinogona yekudyidzana dzinosiyana ruvara, musava semamwe marudzi, uye tora zvakasiyana siyana noruvara kubvira Pink rakacheneruka uye anopera pfumbu. Kupenda pamusoro girenayiti, kunyanya pakuti zvicherwa, iyo kwayo vakawanda chinokwana chinokurira pamusoro navamwe nhengo kupiwa rudzi. Feldspar yemanyorero inomiririrwa rakasiyana-siyana potassium feldspar uye kunogona vaisanganisa kana albite oligoclase. A Goldstone inclusions mu girenayiti vane chimiro duku kadikidiki vitreous mbeu. Ekupedzisira anogona kuva zvishoma rinokwanisa kucheneruka kana Hauoneki. Kuwedzera, achipindura mubvunzo chii chinoumba girenayiti, iva nechokwadi nokuongorora kwebasa rinofanira muscovite uye biotite, uyewo zvinhu zvakadai zircon, magnetite, titanium, apatite uye allanite. Zvisinei, zviri mu chicherwa ichi chaizvo, zvishoma chaizvo. Kutaura nezvemabasa zvose zvinhu chine girenayiti, tinoona kuti pamwe kuwanda kana kushaya zvimwe zvinoumba nayo vari kutanga kureva dzimwe mhando wamatombo. Saka, kana pane zvishoma potassium feldspar uye Goldstone, izvozvo muwisira boka Goldstone diorite kana monzonite. Kana girenayiti iri guru vakawanda chikamu plagioclase, chicherwa ichi anonzi granodiorite, uye panguva wo pasi zviri mafic zvicherwa - leucogranite.

Deposits, migodhi

Kamwe tine akaongororwa muudzame, chii inoitwa girenayiti, udza zvishoma pamusoro apo chicherwa ichi chinowanikwa uye umo mined. Zvakasikwa, erudzi urwu riri kumbonyanya hombe idzodzo aizivikanwa batholiths. ukobvu ravo 3-4? km refu uye kazhinji kwazvo 100 akaenzana makiromita. Uyewo, deposits ose girenayiti anogona kutora chimiro mumatanda uye dikes. Kakawanda, akaturikidzana venyika chicherwa ichi dziri mumwe kupfuura vamwe, uye chiito sezvo marongera sedimentary kana metamorphic matombo. Deposits pamusoro granitic mabwe, pane zvachose ose kondinendi. Kakawanda zvinowanika munzvimbo dzaiva simba anozoumbiridzwazve denudation pezvakaitwa, nokuda iyo kuvimbika sedimentary dombo rakatyoka. Mune US, girenayiti deposits dziri pedyo Ozark Plateau pamapani Makomo Rocky uye pamakomo Black Hills. MuRussia, chicherwa ichi dzinowanzotsigi- riri Urals, kumabvazuva kweSiberia uye kuFar East.