Gauin, gauinite a gauinite - tectosilicate mineral me ka sulfate - wikiō
Nā mea:
ʻO Gauine, gauinite a i ʻole gauinite he mineral sulfate tectosilicate me kahi kumu kumu Na3Ca(Si3Al3)O12(SO4).
E kūʻai i nā pōhaku maoli ma kā mākou hale kūʻai
Hiki i ka 5 wt. K2O, a me H2O a me Cl. He feldspar a he lālā o ka hui sodalite. Ua wehewehe mua ʻia ka pōhaku i ka makahiki 1807 ma muli o nā kiʻi i loaʻa i ka pele Vesuvian ma Monte Somma, Italia, a ua kapa ʻia i ka makahiki 1807 e Brunn-Neergard ma muli o ka mea kākau kiʻi kiʻi kiʻi ʻoniʻoni Farani ʻo René Just Gahuy (1743–1822). I kekahi manawa hoʻohana ʻia e like me ka pōhaku.
ʻike
Hoʻopili ia i ka ʻōnaehana isometric, e hana ana i nā kristal dodecahedral a i ʻole pseudooctahedral a hiki i 3 knm ke anawaena; hiki mai nō hoʻi e like me nā ʻano hua poʻe. He aniani ke aniani a hiki i ka translucent, me ka vitreous a i ka ʻaila hinu. ʻO ka uliuli maʻamau ka waihoʻoluʻu, akā hiki ke keʻokeʻo, hina, melemele, ʻōmaʻomaʻo, a me ka poni. Ma ka ʻāpana lahilahi, ʻaʻole waihoʻoluʻu nā kristal a i ʻole polū ʻulaʻula, a ʻo ka ʻōniʻoniʻo he uliuli a keʻokeʻo.
waiwai
He isotropic ka pohaku. ʻO nā mineral isotropic maoli ʻaʻohe birefringence, akā nāwaliwali ka birefringent i ka pōhaku i ke alo o nā inclusions i loko. ʻO ka index refractive he 1.50. ʻOiai he haʻahaʻa loa, e like me ke aniani puka aniani maʻamau, ʻo ia ka waiwai kiʻekiʻe loa no nā minerala mai ka hui sodalite. Hiki iā ia ke hōʻike i ka ʻulaʻula-ʻalani a hiki i ka fluorescence mauve ma lalo o ke kukui ultraviolet lōʻihi.
ʻAʻole maikaʻi ka neckline, a pili nā māhoe, komo a polysynthetic. ʻAʻole maʻamau ka haʻihaʻi i ke ʻano o ka pūpū, palupalu ka mineral a he ʻano paʻakikī o 5 1/2 a 6, kokoke like me ka feldspar. ʻO nā lālā a pau o ka hui sodalite he haʻahaʻa haʻahaʻa haʻahaʻa, emi ma mua o ka quartz; ʻO hauyne ka mānoanoa o nā mea a pau, akā he 2.44–2.50 wale nō kona kaumaha.
Inā kau ʻia ka pōhaku ma luna o kahi paheʻe aniani a mālama ʻia me ka waikawa nitric HNO3, a laila ʻae ʻia ka hopena e hoʻoheheʻe mālie, ua hoʻokumu ʻia nā nila gypsum monoclinic. Hoʻokaʻawale kēia i ka hauine mai ka sodalite, ka mea ma lalo o nā kūlana like i hana ʻia nā kristal cubic o ka chlorite. ʻAʻole radioactive ka mineral.
Laʻana mai Mogok, Burma
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