Katsi Ziso Pezzottaite
Zviri Mukati:
Katsi ziso pezzottaite, inotengeswa secrimson kana crimson beryl.
Tenga matombo echisikigo muchitoro chedu chematombo
ziso rekitsi tsvuku
Iyi imhando itsva yemaminerari. Ini ndakatanga kuzivikanwa neInternational Mineralogical Society munaGunyana 2003. Pezzottaite ndiyo cesium yakaenzana neberyllium. Cesium silicate, pamwe neberyllium, lithium uye aluminium. Nemakemikari formula Cs(Be2Li)Al2Si6O18.
Inonzi zita remuItaly geologist uye mineralogist Federico Pezzotta. Pezzottaite pakutanga yaifungidzirwa kuva beryl tsvuku. Kana kuti mhando itsva yeberyllium: cesium beryllium. Zvisinei, kusiyana neberyllium chaiyo, pezzottaite ine lithium uye crystallizes. Iyo iri mu trigonal crystal system, kwete ine hexagonal imwe.
Mucherechedzo wemuvara unosanganisira mimvuri ye crimson tsvuku, orenji tsvuku uye pink. Inocherwa kubva kune merolithic quarries mune granite pegmatite deposits yepurovhinzi yeFianarantsoa kumaodzanyemba kweMadagascar. Makristasi epezzottaite akanga ari maduku, asina kukura kupfuura anenge 7 cm / 2.8 inches, pakukura kwawo kukuru, uye ane tabular kana chimiro chakaenzana.
Uye mamwe, mazhinji acho akabatana zvakanyanya nemachubhu ekukura uye minhenga yemvura. Inenge 10 muzana yezvinhu zvakakasharara zvakare yakava mazwi mushure mekupenya. Mazhinji pezzottaite akachekwa matombo anokosha anorema isingasviki imwe carat (200 mg) uye haawanzopfuura maviri carats/400 mg.
Katsi ziso pezzottaite identification
Kunze kwekuoma 8 pachiyero cheMohs. Muviri uye optical zvinhu zve pezottaite, i.e. chaiyo giravhiti 3.10, refractive index 1.601-1.620. Iyo birefringence ye0.008 kusvika 0.011 (isina kuganhurirwa yakaipa) yakakwirira kupfuura yakajairwa beryllium. Iyo pezzottiat ine brittle, ine goko rakatsemuka kusvika kune chimiro chisina kujairika, ine mitsetse michena.
Kufanana neberyl, ine isina kukwana kana chiedza cleavage pazasi. Pleochroism ine mwero, pink-orenji kana mauve kune pink-violet. Kunyura kwepezzottaite, kana ichionekwa neinotakurika yakananga view spectroscope, inovhara bhendi ine wavelength ye485-500 nm. Mamwe masampuli anoratidza mimwe mitsetse isina kupera simba pa465 uye 477 nm uye faint bhendi pa550–580 nm.
Mazhinji, kana asiri ese, emadhipoziti eMadagascar akapera. Pezzottaite yakawanikwa mune imwe saiti imwe, Afghanistan: chinyorwa ichi pakutanga chaifungidzirwa kuti chakapfuma mucesium morganite/pink beryllium.
Kunge morganite uye bixbite, pezzottaite inofungidzirwa kuve nemuvara wayo kune radiation-induced color centers, kusanganisira trivalent manganese. Pezzottaite inorasa ruvara kana ichipisa kusvika 450°C kwemaawa maviri. Asi ruvara runogona kudzoreredzwa uchishandisa gamma mwaranzi.
Crimson-beryllium cat-eye effect
Mune gemology, chatter, chatter kana katsi ziso mhedzisiro, iyi ioptical reflection effect inoonekwa mune mamwe matombo anokosha. Yakatorwa kubva kuFrench "oeil de chat", zvichireva kuti "ziso rekatsi", kutaura kungave nekuda kweiyo fibrous chimiro chechinhu, senge katsi's scale tourmaline, kana nekuda kwefibrous inclusions kana cavities mubwe, senge chrysoberyl.
Madhipoziti anotanga chat ndiwo tsono. Pakanga pasina machubhu kana mafiibhi mumasampuli akaedzwa. Tsono dzinogara perpendicular kune ziso rekatsi. Iyo tsono grid parameter inoenderana neimwe chete yeatatu orthorhombic axes echrysoberyl crystal nekuda kwekurongeka munzira iyoyo.
Chiitiko chacho chakafanana nekupenya kwekoil yesirika. Iyo bhendi inopenya yechiedza chakaratidzwa inogara yakatarisana negwara remafibhi. Kuti gemstone iratidze zvakanyanya kuita uku, inofanirwa kunge iri muchimiro checabochon.
Denderedzwa negadziko rakati sandara, risina kuchekwa, rine mafiber kana mafibrous structures anoenderana nechepasi pedombo rakapedzwa. Mienzaniso yakanakisisa yakapedzwa inoratidza imwe yakapinza. Mutsara wechiedza unopfuura nepadombo parinotenderera.
Matombo emhando yepasi Chatoyant anoratidza striated maitiro akafanana neakati maziso emhando dzequartz. Matombo akatarisana anoratidza maitiro asina kunaka.
Katsi ziso pezzottaite kubva kuMadagascar
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