Cat's Eye Pezzottaite

Cat's eye pezzottaite, wanda aka siyar dashi azaman Crimson ko Crimson beryl.

Sayi duwatsu masu daraja na halitta a cikin shagon mu na gemstone

Crimson cat ido

Wannan sabon nau'in ma'adinai ne. Ƙungiyar Ma'adinai ta Duniya ta fara gane ni a cikin Satumba 2003. Pezzottaite shine cesium daidai da beryllium. Cesium silicate, kazalika da beryllium, lithium da aluminum. Tare da dabarar sinadarai Cs (Be2Li) Al2Si6O18.

An yi masa suna bayan masanin ilimin ƙasa na Italiya kuma masanin ma'adinai Federico Pezzotta. Tun da farko an yi tunanin Pezzottaite ja beryl ne. Ko sabon nau'in beryllium: ceium beryllium. Duk da haka, ba kamar beryllium na gaskiya ba, pezzottaite ya ƙunshi lithium da crystallizes. Yana cikin tsarin crystal trigonal, ba mai hexagonal ba.

Tsarin launi ya haɗa da tabarau na ja mai ja, orange ja da ruwan hoda. Ana hako shi daga ma'adinan merolithic a cikin granite pegmatite adibas na lardin Fianarantsoa a kudancin Madagascar. Lu'ulu'u na pezzottaite ƙanana ne, waɗanda ba su fi kusan 7 cm/2.8 inci ba, a mafi girman girmansu, kuma suna da siffa ko siffar daidai.

Wasu kuma, yawancinsu suna da alaƙa da ƙarfi da bututun girma da gashin fuka-fukan ruwa. Kusan kashi 10 cikin ɗari na ƙaƙƙarfan kayan suma sun zama kalmomi bayan goge goge. Yawancin pezzottaite yanke gemstones suna yin nauyi ƙasa da carat ɗaya (200 MG) kuma da wuya ya wuce carats biyu/400 MG.

Idon cat's pezzottaite ganewa

Sai dai taurin 8 akan ma'aunin Mohs. Kaddarorin jiki da na gani na pezottaite, i.e. ƙayyadaddun nauyi 3.10, index refractive 1.601-1.620. Matsakaicin 0.008 zuwa 0.011 (mara kyau mara kyau) ya fi na beryllium na al'ada. Pezzottiat yana da karye, tare da karyewar harsashi zuwa sifar da ba ta dace ba, tare da fararen ɗigon ruwa.

Kamar beryl, yana da lahani mara kyau ko haske a gindi. Pleochroism matsakaici ne, fure-orange ko mauve zuwa fure-violet. Bakan juzu'i na pezzottaite, lokacin da aka duba shi tare da šaukuwa mai ɗaukar hoto spectroscope, yana rufe band ɗin da tsayin 485-500 nm. Wasu samfurori suna nuna ƙarin layukan suma a 465 da 477 nm da ƙananan band a 550-580 nm.

Yawancin, idan ba duka ba, ajiyar kuɗin Madagascar sun ƙare. An samo Pezzottaite a aƙalla wani rukunin yanar gizon, Afghanistan: da farko an yi tunanin cewa wannan abu ya ƙunshi yawancin cesium morganite / ruwan hoda beryllium.

Kamar morganite da bixbite, pezzottaite an yi imanin ya ba da bashi ga launi zuwa cibiyoyin launi na radiation, ciki har da manganese trivalent. Pezzottaite zai rasa launi lokacin zafi zuwa 450 ° C na sa'o'i biyu. Amma ana iya dawo da launi ta amfani da hasken gamma.

 Crimson-beryllium cat-ido sakamako

A gemology, chatter, chatter ko cat's ido tasirin, wannan wani tasiri ne na gani da ake gani a wasu duwatsu masu daraja. An samo shi daga Faransanci "oeil de chat", ma'ana "idon cat", yin hira ko dai saboda tsarin fibrous na kayan, kamar yadda yake a cikin sikelin cat's tourmaline, ko kuma saboda abubuwan da ke cikin fibrous ko cavities a cikin dutse, kamar a cikin chrysoberyl.

Adadin da ke jawo tattaunawar shine allura. Babu bututu ko zaruruwa a cikin samfuran da aka gwada. Allura sun daidaita daidai da tasirin ido na cat. Ma'aunin grid ɗin allura ya yi daidai da ɗaya kawai daga cikin gatari uku na orthorhombic na kristal chrysoberyl saboda daidaitawa a waccan hanyar.

Lamarin ya yi kama da haske na siliki. Ƙaƙwalwar haske na haske mai haskakawa koyaushe yana kan daidai da alkiblar zaruruwa. Domin gemstone ya fi nuna wannan sakamako, dole ne ya kasance a cikin nau'i na cabochon.

Zagaye tare da tushe mai lebur, wanda ba a yanke ba, tare da zaruruwa ko tsarin fibrous daidai da gindin dutsen da aka gama. Mafi kyawun samfuran da aka gama suna nuna kaifi ɗaya. Layin haske yana wucewa ta cikin dutse yayin da yake juyawa.

Ƙananan duwatsun Chatoyant suna nuna tasiri mai tasiri na nau'in ido na ma'adini na cat. Duwatsun da aka fuskance suna nuna sakamako mara kyau.

Cat's eye pezzottaite daga Madagascar

Sayarwa na halitta duwatsu a cikin gemstone store