I-Cat's Eye Pezzottaite

I-pezzottaite yeso lekati, ethengiswa njenge-crimson noma i-crimson beryl.

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iso lekati elibomvu

Lolu uhlobo olusha lwamaminerali. Ngaqala ukuqashelwa yi-International Mineralogical Society ngoSepthemba 2003. I-Pezzottaite ilingana ne-cesium ne-beryllium. I-cesium silicate, kanye ne-beryllium, i-lithium ne-aluminium. Ngefomula yamakhemikhali ethi Cs(Be2Li)Al2Si6O18.

Iqanjwe ngemuva kwesazi sokuma komhlaba sase-Italy kanye nesazi semineralogist uFederico Pezzotta. I-Pezzottaite ekuqaleni yayicatshangwa ukuthi i-beryl ebomvu. Noma uhlobo olusha lwe-beryllium: i-cesium beryllium. Kodwa-ke, ngokungafani ne-beryllium yangempela, i-pezzottaite iqukethe i-lithium futhi i-crystallizes. Ikuhlelo lwekristalu elingunxantathu, hhayi olunezinhlangothi ezine.

Uhlelo lombala luhlanganisa ama-shades of crimson red, orange red and pink. Imbiwa ezinkwalini ze-merolithic ezindaweni ezigciniwe ze-granite pegmatite esifundazweni sase-Fianarantsoa eningizimu ye-Madagascar. Amakristalu e-pezzottaite ayemancane, engekho mkhulu kuno-7 cm/2.8 amayintshi, ngosayizi wawo obanzi kakhulu, futhi anomumo wethebula noma olinganayo.

Futhi ezinye, eziningi zazo zihlotshaniswa kakhulu namashubhu okukhula kanye nezimpaphe eziwuketshezi. Cishe amaphesenti ayishumi ezinto ezimahhadlahhadla nawo aphenduka amagama ngemva kokupholishwa. Iningi lamatshe ayigugu asikiwe e-pezzottaite anesisindo esingaphansi kwe-carat eyodwa (10 mg) futhi awavamile ukweqa amakharati amabili/200 mg.

Ukuhlonza iso lekati le-pezzottaite

Ngaphandle kokuqina 8 esikalini se-Mohs. Izakhiwo ezibonakalayo nezamehlo ze-pezottaite, i.e. amandla adonsela phansi athize 3.10, inkomba ye-refractive 1.601-1.620. I-birefringence ka-0.008 kuya ku-0.011 (negethivu engakhawulelwe) iphakeme kune-beryllium evamile. I-pezzottiat i-brittle, inegobolondo eliphukile ukuze libe nomumo ongajwayelekile, linemigqa emhlophe.

Njenge-beryl, ine-cleavage engaphelele noma elula esisekelweni. I-Pleochroism iphakathi, i-rose-orange noma i-mauve ku-rose-violet. I-spectrum yokumunca ye-pezzottaite, uma ibukwa nge-spectroscope ephathekayo ephathekayo, ivala ibhande ngobude begagasi obungu-485-500 nm. Amanye amasampula abonisa imigqa eyengeziwe efiphele ku-465 no-477 nm kanye nebhendi epholile engu-550–580 nm.

Iningi, uma kungewona wonke, amadiphozithi aseMadagascar aphelile. I-Pezzottaite itholakale okungenani kwenye indawo eyodwa, e-Afghanistan: ekuqaleni kwakucatshangwa ukuthi le nto iqukethe i-cesium morganite/pink beryllium eningi.

Njenge-Morganite ne-bixbite, i-pezzottaite kukholakala ukuthi ikweleta umbala wayo ezikhungweni zombala ezenziwe ngemisebe, okuhlanganisa ne-trivalent manganese. I-Pezzottaite izolahlekelwa umbala uma ishisisa kufika ku-450°C amahora amabili. Kodwa umbala ungabuyiselwa kusetshenziswa imisebe ye-gamma.

 Umphumela we-Crimson-beryllium cat-eye

Ku-gemology, ingxoxo, ingxoxo noma umphumela wamehlo wekati, lokhu kuwumphumela wokubonakala obonwa kwamanye amatshe ayigugu. Lisuselwe kwelesiFulentshi elithi "oeil de chat", okusho ukuthi "iso lekati", ukuxoxa kungenxa yesakhiwo esine-fibrous sezinto ezibonakalayo, njengaku-cat's scale tourmaline, noma ngenxa yokufaka imicu noma imigodi etsheni, njengaku-chrysoberyl.

Amadiphozithi aqala ingxoxo izinaliti. Awekho amashubhu noma imicu kumasampuli ahloliwe. Izinaliti zixazulula i-perpendicular to the cat's eye effect. Ipharamitha yegridi yenaliti ihambisana neyodwa kuphela yezimbazo ezintathu ze-orthorhombic zekristalu ye-chrysoberyl ngenxa yokuqondanisa kuleyo ndlela.

Lo mkhuba ufana nokukhanya kwekhoyili kasilika. Ibhande elikhanyayo lokukhanya okubonisiwe lihlala libheke ohlangothini lwemicu. Ukuze itshe eliyigugu libonise kangcono lo mphumela, kufanele libe sesimweni se-cabochon.

Indilinga enesisekelo esiyisicaba, esingasikiwe, esinemicu noma izakhiwo ezinomucu ezihambisana nesisekelo setshe eliqediwe. Izifanekiso eziqediwe ezinhle kakhulu zibonisa eyodwa ebukhali. Umugqa wokukhanya odlula etsheni njengoba lizungeza.

Amatshe e-Chatoyant ekhwalithi ephansi abonisa umphumela we-striated wezinhlobo ze-quartz zamehlo ekati. Amatshe anobuso abonisa umphumela kabi.

I-Cat's eye pezzottaite evela eMadagascar

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