Ko te Canasite he kohuke silicate onge e kitea ana i roto i nga taiao igneous tino kawakore. E mohiotia ana mo tona tae papura ki te tae waireti, mai i te rōhirohi kōwhai ki te tae hōhonu, kukū. Ahakoa he rite tona tae ki nga kohuke penei i te Amethyst, ka wehewehea a Canasite e tona hanganga matū ahurei me tona takenga whenua. E tino honoa ana ki nga papatipu Khibiny me Lovozero i te Kola Peninsula o Rūhia, ahakoa kua kitea i etahi atu waahi motuhake puta noa i te ao, penei i Namibia. Ko te ingoa "Canasite" he whakaata tika i ona poraka matū matua: te Calcium, te Natrium (Konutai), me te Silicon. I roto i te hanganga, he maha nga wa ka puta hei whakahiato muka, prismatic ranei, e whai waahi ana ki tona kanapa karaihe ki te peara.
Te takenga mai me te kitenga
Ko te puna matua mo te canasite kounga-kohatu he rohe whenua motuhake i Rūhia. I kitea tuatahitia te kohuke i ngā tau 1970 i roto i te Murun Massif, kei te taha rāwhiti o Siberia. Ko tēnei rohe mamao e mōhiotia ana e ngā tohunga whenua mō ōna hanganga toka pāwhara kawakawa matatini, e pai ana ki te whakapakoko o ngā kohuke silicate onge.
Ko te pūhui o Murun hoki te wāhi momo mō te charoite, he kōhatu whakapaipai e mōhiotia ana mō tōna tae papura motuhake me tōna kākano āwhiowhio. Nā te matū whenua motuhake e hiahiatia ana mō tōna hanganga, ka kitea i ētahi wā te canasite i te taha o te charoite i roto i ngā toka kaihau kawakawa kotahi.
Ko te whai wāhitanga o ēnei putunga e herea ana e te tawhiti o te wāhi whenua me ngā wero hangarau e pā ana ki te tango i ngā tauira kōhuke mai i te toka kāinga me te kore e whakapakaru. Nā reira, ko te iti o te putanga o ngā rawa kounga-kohatu i mau tonu ai te onge o te canasite i te mākete kōhuke. Ko ngā putanga kua whakamanahia o te canasite i waho o tēnei rohe o Siberia, he wehe whenua, e whakapakari ana i tōna tūnga hei tauira motuhake mō ngā kohinga kōhuke.
Whakarōpūtanga i roto i te Rōpū Canasite
I roto i te whakamaoritanga pūkawa, ehara te "canasite" i te momo kohuke kotahi anake, engari ko te ingoa o tētahi rōpū kohuke motuhake. Nā ngā rerekētanga o te hanganga matū—otirā ngā ōwehenga o te pūkawa fluorine me ngā rōpū hydroxyl—me ngā panonitanga o te hangarite kirikiri, e whakaaetia ana e te International Mineralogical Association (IMA) kia toru ngā momo motuhake e piri tata ana i roto i tēnei rōpū.
1. Canasite
Ko te Canasite te momo taketake o te rōpū, e whakapakari ana i te pūnaha monoclinic. Ko tōna anga hanganga he mekameka silicate matatini e hono ana ki te konupūmā, te konutai, me te pāhare pāporo, e whakauru ana i ngā rōpū fluorine me te hydroxyl. Ka kitea i roto i ngā taiao toka ahi tino kawakawa, e puta ana hei kāhui kākāriki ki te waireti, he kāhui kōaka, he kāhui prismatic rānei.
2. Fluorcanasite
Ko te fluorcanasite, i kōrerotia tuatahitia e tētahi rōpū i ārahina e Alexander P. Khomyakov i te tau 2003, ko te taurite mātāmua o te pūkōwhai o te canasite. Ko tōna hanganga matū e tohu ana i te whakakapinga katoa o te rōpū hydroxyl e te pūkōwhai. Ahakoa e mau ana i te āhua tinana e rite ana ki te canasite—e whakaatu pinepine ana i ngā ātārangi papura—ko tōna mā matū e pā ana ki te ihirangi pūkōwhai e whakapūmau ana he momo kōhatu motuhake.
3. Frankamenite
Ko te Frankamenite te mema tino rerekee o te roopu. Kaore i rite ki te canasite monoclinic me te fluorcanasite, ka whakataetae te frankamenite i roto i te pūnaha triclinic. I kitea i roto i ngā toka charoitic o te Murunskii Massif, ā, i whakaingoatia ōkawatia i te tau 1996 hei whakahōnore i te tohunga whakataetae a Rūhia, a Victor Albertovitch Frank-Kamenetsky.
I tua atu i tōna hangarite ahurei, kei roto i te frankamenite he wai hanganga i roto i tōna anga, e wehewehe ana i a ia i te hanganga kore-wai o ērā atu mema. Ki te titiro, ka puta te frankamenite i te whānuitanga o ngā tae i te canasite papura noa, tae atu ki ngā ātārangi o te kākāriki, te kikorangi, me te hina-papura.
Ko te rōpū canasite he tauira whakahirahira o te matatini o te kohuke i roto i ngā taiao toka pāwhara kawakawa. Ko te mea e kitea ana e te kanohi tahanga he kōhatu papura māmā, inā tirohia āta, he whakawhitiwhitinga mākū o te whakatikatika i te whāriki tioata me te whakakapi i ngā pūmotu. Ahakoa ko te canasite taketake, te fluorcanasite whai-fluorine, te frankamenite whai-wai, he rerekē te hanganga, ko ia mema o tēnei rōpū e whakarato ana i ngā māramatanga matua ki ngā āhuatanga ā-whenua o tō rātou hanganga.