Ko te Brazilianite he mīra phosphate e hangaia ana i te nuinga o te sodium, te aluminum, te hauora, me te phosphorus, ko te tātai matū NaAl₃(PO₄)₂(OH)₄. E mōhiotia whakamua ana mō tōna tae kākāriki-kōwhai ki te kōwhai, me ōna kirihou orthorhombic e whanake ana pai, ka puta hei tauira mārama ki te haurongo, me te kanapa vitreous kaha. Ka noho pūmau te Brazilianite i roto i ngā pegmatites phosphate-rich me ngā taiao hydrothermal e hāngai ana, kei reira e hono ana ki ngā mīra pērā i te albite, te quartz, te muscovite, te apatite, me ētahi atu mīra phosphate. Ko tōna kaha teitei ake, tōna āhua kirihou motuhake, me tōna tae kōwhai āhuahanga, e whakaatu ana i te māmā o te kitea i ngā tauira e whanake ana pai.
Ko te Brazilianite he wāhanga o te rōpū mīhini phosphate, ā, e hono ana ki ētahi atu mīhini phosphate alumini. He nui ngā kristi roa, he ahua prismatic, me ngā mata kaha, me ngā pito mārama. Ka taea te whakarerekē i te tae mai i te kākāriki-kōwhai māeneene, kōwhai-kākāriki, ki te kākāriki-kōwhai kaha, ki te kore-tae, i runga i te tauira me te whakawhiti iti o ngā matū, me ngā rerekētanga hanga. Ko te uara Mohs o te Brazilianite he 5.5 pea, kei waenganui te kaha, ā, ko te taumata taimaha motuhake e whakaatu ana i tana hanga e kaha ana ki te alumini me te phosphate.
Ko te mīhini tēnei e piri ana ki ngā pegmatite granitic, ā, ko ngā pūnaha pegmatitic kua whakawhanakehia rawa atu, kei reira ka nui ake te phosphorus me ētahi atu huānga kāore e taea te whakauru i ngā wai o te wā mutunga. Ka puta mai te Brazilianite i roto i ngā kokonga o ēnei kohatu, kei reira ka taea e ngā kristiani takitahi te tipu māori. Ko ētahi tauira ka hanga i ngā rōpū o ngā kristiani kua whanake pai, ko ētahi anō ka puta hei kohikohinga kaha, compact rānei. Ko te huinga o te āhua kristiani, te tae, te kanapa, te wehenga, te kaha, me te hono hoanhau o te mīhini, he tohu whai hua hei wehewehe i a ia i ngā mīhini phosphate me ngā silicate kākāriki mā te āhua.
Ngā Kōrero me te Kimi i te Brazilianite
Kua whakaahuatia tuatahihia te Brazilianite i te tau 1944 mai i ngā tauira kua kitea i te rohe o Minas Gerais, Brazil, he wāhi e mōhiotia ana mō āna pegmatites granitic me ngā kohinga minera phosphate rerekē. I whakawhiwhia te ingoa Brazilianite hei whakaatu ki a Brazil, te whenua i kitea tuatahi ai tēnei mineral, ā, kei reira hoki ētahi o ngā wāhi nui rawa atu o tana noho. Nā tōna kitenga, ka tāpirihia he mineral phosphate hou ki te rekohu mineralogical kaha o ngā rohe pegmatite o Brazil, kua puta mai i reira maha ngā momo phosphate me ngā tauira mineral kua hanga pai.
Ko ngā tauira taketake o te brazilianite i honoa ki ngā taiao pegmatitic e whai ana i te phosphate, ā, ko te rohe o Conselheiro Pena i Minas Gerais tētahi o ērā. Ko ēnei pegmatites he tinana igneous kua whakawhanaketia rawa, i hangaia i ngā wā whakamutunga o te crystallization o te magma granitic. I te mea ka haere tonu te crystallization, ko ngā huānga me ngā wāhanga mīharo kāore i taea te whakauru ki ngā minepara matua o te kohatu, ka kohikohi ki ngā wai me ngā wai toe. Ka taea te whakapiki ake o te phosphorus, te sodium, te aluminum, te lithium, te beryllium, me ētahi atu huānga, ka hanga i ngā āhuatanga pai mō te hanga o ngā minepara phosphate motuhake pērā i te brazilianite.
I muri i tōna kitea tuatahi i Brazil, kua whakamāramahia te brazilianite ki ngā wāhi atu, ā, kua noho hei minere nui mō te rangahau me te wehewehe i ngā kohinga phosphate kei roto i ngā pegmatites granitic. Ahakoa kei Brazil tonu te hononga kaha ki tēnei momo, kua rēhitatia hoki ngā take ki ētahi atu taiao geolohi e kī ana i te phosphate puta noa i te ao. He uaua te whai hua o te brazilianite e ngā kaihopu minere ina hangaia he kristal takitahi, mārama ki te haurongo, me ngā pito mārama, me te tae kōwhai ōrite, engari ko tōna hiranga pūtaiao ka hono ki tōna hanga matū motuhake, hanga kristal, me tōna putanga i roto i ngā pūnaha pegmatitic kua whakawhanakehia rawa.
Te Hanga me te Whakapaipai Āhuahanga o Brazilianite
Ka hanga te Brazilianite i roto i ngā pegmatites granitic kua whakawhanakehia rawa, me ngā wāhi nui phosphate e piri ana ki ēnei toka. Ko tōna hanganga e hono ana ki ngā tukanga magmatic me hydrothermal o te mutunga, ina kaha ake ngā wai toe i te phosphorus, te sodium, te aluminum, me ētahi atu huānga. I ngā wāhanga whakamutunga o te crystallization o te pegmatite, ka taea e ēnei wāhanga te whakaputa i ngā minere kua hangaia mua, ka taka rānei mai i ngā wai phosphate i ngā āputa me ngā pakaru. Nō reira, ka kitea te Brazilianite i ngā kohinga minere e tohu ana i ngā wāhanga whakamutunga o ngā pūnaha pegmatitic, kaua ki ngā wāhanga matua o te hanga toka i te wā tuatahi.
He minera tēnei e āhua motuhake ana ki ngā pōkai whai phosphate nui i roto i ngā pegmatites uaua. I ēnei taiao, kua tino kristallize ngā minera taketake pērā i te quartz, te feldspar, me te mica, ā, ka waiho ngā wāhi toe hei wāhi e tipu ai ngā minera phosphate. Ka puta te Brazilianite ki ngā pakitara o ngā pokapū hei kristala takitahi, hei rōpū kristala, hei tāhuna hoki e hono ana ki ētahi atu minera phosphate tuarua, he mea whakamutunga rānei. Ka tino pai te hanganga o ōna kristala ina nui te wāhi mārō, ā, ina pōturi te auau tipu, kia taea ai te hanganga o ngā mata kristala mārama me ngā mutunga.
Ko tētahi o ngā take e mōhiotia whānuitia ana kei te rohe Conselheiro Pena o Minas Gerais, Brazil, kei reira ka kitea te brazilianite i roto i ngā pegmatites granitic uaua. Kei roto i ngā pegmatites o tēnei rohe he rerekētanga nui o ngā mīhini phosphate, ā, kua puta mai hei tauira me ngā kristal brazilianite hangaiha. Ko ētahi atu wāhi nui o Brazil e pā ana hoki ki ngā pegmatites e whai phosphate ana i Minas Gerais. I waho i a Brazil, kua kōrerotia te brazilianite mai i ētahi atu rohe pegmatitic me ngā āhuatanga whenua e whai phosphate ana, ahakoa he iti ake te whakaute o ētahi atu wāhi i te kounga o ngā tauira i ōna wāhi taketake o Brazil.
Ka taea te kite i te brazilianite i te tahi me ngā mīhini pēnei i te albite, te kōhatu whero, te muscovite, te apatite, te triphylite, te lithiophilite, me ētahi atu momo phosphate. Ka rerekē te hononga mīhini e ai ki te hanganga matū me te hītori whanaketanga o te pegmatite kaiwhakahaere. Ka taea hoki e ngā tukanga huringa te pānga ki te kohinga phosphate, mā ngā wai whakamutunga e huri i ngā mīhini phosphate o mua, ā, ka hanga i ngā wāhanga hou. Nō reira, he uaua te brazilianite ehara noa iho hei momo mīhini anake, engari he wāhanga hoki o te rārangi mīhini whānui o te kristalizatio phosphate o te wā whakamutunga i roto i ngā pūnaha pegmatitic kua whanake.
Te Hanga Kōhatu o Brazilianite
Ka whakapapa te brazilianite ki te pūnaha karaihe orthorhombic, ā, he hanga phosphate pōkaikaha tēnei e hangaia ana i te nuinga o te wā e ngā matū sodium, aluminum, phosphorus, oxygen, me ngā rōpū hydroxyl. Ko te tātai matū tino pai ko NaAl₃(PO₄)₂(OH)₄. I roto i te hanga, ka honoa te phosphorus ki ngā atoma oxygen e whā hei hanga i ngā tetrahedra PO₄, ā, ka noho te aluminum ki ētahi wāhi e honoa ana ki te oxygen me ngā rōpū hydroxyl. Ka hono ēnei polyhedra e whakawhirinaki ana ki te aluminum ki ngā tetrahedra phosphate hei hanga i tētahi anga hanga herehere. Ka noho te sodium ki ngā wāhi hanga nui ake i roto i tēnei anga, ā, ka tautoko i te ōritenga hiko katoa o te mineral. He wāhanga hanga nui ngā rōpū hydroxyl, kaua hei mea whakararuraru noa; nā tō rātou whai wāhi ka rerekē te hanga o te brazilianite i ngā mineral phosphate aluminum kāore he wai, e ōrite ana i ngā āhuatanga matū. Nā te here kaha i waenganui i ngā wāhanga hanga phosphate me ngā wāhanga hanga e whai ana i te aluminum, ka puta mai te kaha pānga, te pūmautanga, me ngā āhuatanga ā-ahuahanga motuhake o te mineral.
Ko te āhua o te hanganga orthorhombic o te brazilianite, e tohu ana ko ōna tuaka toru kristalohia he whakapae tika ki a rāwāhi engari he rerekē ngā roa, e hua ai he hanganga he iti iho te symmetry i ngā mīhini cubic. Ko tēnei hanganga kristalohia ka kitea i te āhua tipu pūmau o te mīhini, arā, he roa, he pūmau, he mārama ngā mata prismatic me ngā mutunga kaha. Ka taea hoki te brazilianite kia puta mai hei kristalau e whakauru ana, hei kohinga kristalau, i ētahi wā he papatahi, he āhua kore-māmā rānei ina kāore e taea te tipu kristalau kore-whakaritenga. Ka taea hoki te whakamāori i te āhua o ngā tauira takitahi mā te twinning me ngā whakauru anō. Nā te mea kei te whakawhirinaki te hanganga ngota ki te ahunga, he anisotropic te brazilianite, ā, ka whakaatu i ngā āhuatanga optika me ngā āhuatanga tinana rerekē i runga i ngā ahunga kristalohia rerekē. Nō reira, ko tōna cleavage, ko ngā refractive indices, ko te birefringence, me ētahi atu āhuatanga optika e hono ana ki tōna hanganga orthorhombic. I roto i ngā kristalau mārama, he mārama ake tēnei, engari ka taea e ngā inclusion, ngā fracture, ngā hapa hanganga, me ngā whakawhiti matū iti te pānga ki te māramatanga me te āhua o te tae i roto i ngā kristalau takitahi.
Kōwhiro, Kāpehu, me ngā Āhuatanga Aho o te Brazilianite
He mea whero, kākāriki-kōura, kōura-hāpara rānei te tae o te brazilianite i te nuinga o te wā, ahakoa ka kitea ētahi kirihou he kore-tae rawa atu, he mārama noa iho i raro i ngā āhuatanga aroha. Ko te tae kōraua tētahi o ngā āhuatanga tirohanga e tino mōhiotia ana e te brazilianite, ā, he tino kitea i roto i ngā kirihou mārama mai i ngā pūtake pegmatitic kua whanake pai. Ka rerekē te kaha o te tae i waenganui i ngā tauira, ā, ka pāngia pea e ngā whakakapi matū iti, ngā hapa hanganga, ngā taonga, me te mātotoru o te kirihou. He tino ōrite te tae o ētahi kirihou, engari ka taea e ētahi atu te whai wāhi ki ngā wāhanga kei reira ngā rerekētanga i te mārama, i te tae rānei. He mā te tohu o te brazilianite i te nuinga o te wā, e whakarato ana i te wehenga whai hua i ngā minere e whai ana i te tae tinana me te tohu tae kaha.
He aho kōhatu (vitreous luster) te āhua o te Brazilianite i ngā mata kōhatu hou, e whakaputa ana i tētahi āhua rite ki te kirihou mō ngā tauira kua whanake pai ina pāngia te mārama ki ōna mata. Ko tōna mārama he mea tātari mai i te mārama katoa ki te mārama haurua, ā, ko ngā kōhatu pai rawa e waiho ana kia haere te mārama mā roto i ngā wāhanga nui o te tauira. He whai hua nui ngā kōhatu mārama hei titiro ki ngā āhuatanga optiko o roto o te mineral me te wehewehe kōhatu. Ko ngā tauwehe whakaata o te brazilianite he nui rawa atu mō tētahi mineral kei reira te aluminum me ngā rōpū phosphate, e whakanui ana i tōna kanapa mata. Nā te mea he mineral orthorhombic te brazilianite, he anisotropic ia i te tirohanga optiko, ā, ka kitea te birefringence, arā, ka wehea ngā kīwaha mārama e haere ana mā roto i te kōhatu ki ngā kīwaha e rerekē ana te āhua whakaata i runga i te ahunga kristal.
I raro i te mārama whakarōpū, ka taea e te brazilite te whakaatu i ngā pānga whakawhiti āhua e āwhina ana ki te wehe i a ia i ngā mīhini kua rite ki te kanohi. Ko ōna āhuatanga optika hoki e whakawhirinaki ana ki te ahunga o te kristini, e hāngai ana ki tōna hanga orthorhombic. I roto i ngā wāhanga thin me ngā wāhanga polished, ka taea te whakamahi i ēnei rerekētanga optika āhua kotahi me te tohu refractive, te cleavage, te kaha, me te hanga matū hei tautuhi i te mīhini. Heoi, mō ngā tauira ringaringa, ko te tae, te ahunga kristini, te luster vitreous, te mārama, me tōna nohoanga i roto i ngā pegmatites rich phosphate te nuinga e hoʻopuka i ngā tohu kanohi tuatahi, ā, ko te tautuhi whakamutunga e hiahia ana i ngā rangahau mineralogical motuhake ake.
Ngā āhuatanga ōkiko o Brazilianite
He uaua Mohs o te Brazilianite he 5.5, e whakatakoto ana i waenganui i te apatite me te orthoclase i runga i te pae uaua. Ko tēnei uaua waenga ka āhei te mīhini ki te karo i te korikori noa, engari kei raro tonu i te quartz me ētahi atu mīhini gemstone. Ka rerekē te uaua i runga i te ahunga kristalohia, te āhua o te mata, me te nui o ngā taupoki, ngā hapa hanganga rānei. He taumaha motuhake o te Brazilianite he 2.98–3.00, e hāngai ana ki tōna koiora sodium-, aluminum-, me te phosphate-nui. He kōura mā te Brazilianite, he kanapa vitreous, ā, ka taea te kitea mai i te mārama ki te haurua-mārama. Ka taea e ngā kristale pai te whai i ngā mata maeneene, engari ka taea e ngā pakaru, ngā taupoki, me te huringa te whakaiti i tōna mārama.
He Brazilianite he wehewehe motuhake, e whakaahuatia ana i te nuinga hei pai i tētahi, i ētahi atu rānei ngā ahunga, ā, ko tōna pakaru he ōrite ki te subconchoidal ina kore e mana te wehewehe. Nā te hononga o te kaha piri waenga me te wehewehe mārama ake, ka taea te whakakahoretanga o ngā kristi e te pānga mīhini kaha, otirā i runga i ngā papa wehewehe. Ko te āhua kristi he prismatic, he roa rānei, ā, ka puta ētahi wā ngā kristi takitahi hei tauira motuhake i roto i ngā kokonga pegmatite tuwhera. Ka taea hoki te hanga i ngā rōpū pātata, ngā kohinga kua herea, me ngā papatipu kāore e tika ina kati te wāhi, ina kati rānei ngā āhuatanga matū i te whanaketanga o ngā kristi takitahi. Ehara i te mea he māmā te whakawhiti, he elastiki rānei te mineral, engari ka mahi hei phosphate kristi brittle noa ina whiwhi i te pānga mīhini.
Ko ngā āhuatanga ōkiko o te brazilite e pātata ana ki tōna hanga kōhatu me tōna koiora matū. Ko tōna taumaha waenga, kaha, wehenga, me te anisotropy aho he tohu whakamātau whai hua ina honoa ki tōna tae kākāriki-kōwhiti, me tōna noho i roto i ngā pegmatites e nui ana i te phosphate. Ka rerekē te āhua o ia tauira i runga i te rahi o te kōhatu, te taumata mārama, te huringa mata, me ngā mīhini e piri ana. Mō te tautuhi mīhini, kāore he āhuatanga ōkiko kotahi e tika ana hei ake; ko te kaha, te taumaha motuhake, te wehenga, ngā āhuatanga aho, te ahua kōhatu, me te koiora matū te mea pai kia whakaarohia tahi.
Ko te Koiora Hangarau me ngā Āhuatanga Hangarau o Brazilianite
Ko te brazilianite he rēmana matū tino pai NaAl₃(PO₄)₂(OH)₄, ā, kei roto i ngā mīhini phosphate whakawhiti. Ko tōna hanganga e whakahaere ana i te sodium, te aluminum, te phosphorus, te oxygen, me ngā rōpū hydroxyl, ko te phosphorus ka puta hei waeine hanganga phosphate (PO₄). Ka hangaia e ngā wāhanga aluminum me te phosphate te nuinga o te hanganga o te mīhini, ā, ka noho te sodium ki ngā wāhi nui ake i roto i te lattice kristal. Kei te hanganga o te mīhini ngā rōpū hydroxyl, ā, he mea nui kia tiakina ai tōna hanganga matū tino pai. I ētahi atu mīhini, ka kitea te wai hei H₂O molekula e kore e piri tika, engari kei roto i te hanganga kristal te brazilianite, ka whakaurua ngā rōpū hydroxyl ki roto i te hanganga.
Ka taea e ngā whakawhiti iti o ngā huānga me ngā rerekētanga ā-tūiao i te wā o te kristalinitatanga te pānga ki te hanganga tino pai. Ka puta ēnei whakawhiti ina tangohia ngā huānga e rite ana ki te matū ki ngā wāhi hanganga e wātea ana i ngā wā mutunga o te hanganga pegmatite. Nō reira, ka rerekē te hanganga tūturu o tētahi tauira iti iho i te tātai tino pai, engari kāore e huri tona tuakiri hei brazilianite. Ka taea e ēnei rerekētanga iti, me ngā kōpaki me ngā hapa hanganga, te pānga ki ngā āhuatanga tinana pērā i te tae, te mārama, me te whanonga optika. Nō reira, he whai hua ngā tātaitanga matū i te wehe i te brazilianite i ētahi atu minera phosphate kākāriki-kōwhai e taea ana te kitea i te taiao ā-geology ōrite.
Ko te Brazilianite he pūmau ā-rite i ngā āhuatanga e hangaia ai, inā rā i roto i ngā wāhanga phosphate nui o ngā pegmatite granitic. Heoi, mā te whakawhiti ki ngā wai hydrothermal hou, ki ngā tukanga whakapōraru rānei, ka huri te kohinga mīhini e karapoti ana i te brazilianite, ā, ka taea te hanga i ngā mīhini phosphate tuarua. Nā te mea ka taea e ngā pegmatite te whakapiki i ngā wāhanga maha o te mahi wai i muri i tōna kristalizanga tuatahi, ka taea te kite i te brazilianite me ngā wāhanga phosphate tuatahi me ngā tuarua. Nō reira, ko tōna hanganga matū me ōna hononga mīhini ka hoatu i ngā mōhiohio mō te whanaketanga o ngā wāhanga phosphate nui o ngā pūnaha pegmatitic uaua.
Ngā momo me ngā rerekētanga o Brazilianite
Ko te Brazilianite he momo mīhini motuhake, kaua hei mīhini e whai ana i tētahi maha o ngā momo kua whakaaetia māori. Ko ngā rerekētanga i waenganui i ngā tauira ka whakaahuatia anōtia mā te āhua kristara, te tae, te mārama, te rahi, me te wāhi pūtaiao, kaua mā ingoa mīhini wehe. Ko ngā āhuatanga noa e kitea ana i roto i ngā kohinga mīhini ko:
- Brazilite Prismatik: He kōhatu roa, heoi, he āhua whakamātau, me ngā mata prismatic e kitea ana, me ngā pito motuhake. He tohu tēnei mō ngā tauira i hangaia i ngā wāhi mārama o te granitic pegmatites.
- Brazilite mārama: He kōhatu mārama ki te hāneanea katoa, e taea ai te whakawhiti o te rama mā ngā wāhanga nui o te tauira. Ka taea e ngā kōhatu mārama te whakaatu i ngā āhuatanga o roto, pērā i te wehewehenga, ngā taonga kua uru, ngā pakaru, me ētahi atu āhuatanga, kia mārama ake.
- Kōhatu Brazilite kākāriki: Ko te āhua tae tino motuhake, mai i te kōwhai māeneene ki ngā tae kōwhai kaha ake rānei, he kōwhai-kākāriki rānei. He tino kitea te whakamaramatanga o te tae ki ngā kristi nui, me ngā mea hanga pai.
- Kōura-kākāriki Brazilianite: Ngā kōhatu e whakaatu ana i tētahi wāhanga kākāriki mārama i roto i tō rātou tae kōwhai. Ka rerekē te āhua tika i runga i te aho, te mātotoru o ngā kōhatu, ngā taonga pūmau, me ngā rerekētanga iti o ngā matū.
- Rōpū Kiri: Kaore e taea te whakamārama i te kupu 'Brazilianite' ki te reo Māori, nō reira ka waiho tonu.
- Brazilite nui, kore rite rānei: Ka taea hoki te kite i te Brazilianite hei kohinga kati, whakapapa rānei, he ahua motuhake rānei, ina kāore e taea te tipu noa o ngā kristi. Ko ēnei tauira ka kitea he mārama ake ngā mata kristi i ngā kristi i tipu ki roto i ngā wāhi pōkai.
Ko ēnei āhua e tohu ana i ngā rerekētanga o te āhua me te huarahi ka puta ai, kaua ko ngā momo kua whakaritea mā te hanganga me ngā tuakiri matū motuhake. Mō te tautuhi mineralogical, ka whakatauhia te momu mā tana hanganga matū me tana hanganga kirihou, me ōna āhuatanga tinana me ngā āhuatanga aho e mōhiotia ana. He mea nui hoki te taiao geolohia me ngā minere e piri ana, nā te mea ka kitea noa te brazilianite ki ētahi atu minere phosphate e taea te hanga i ngā tae rite, i ngā āhua kirihou rānei.
Wāhi o Brazilianite
Ko te Brazilianite e hono ana ki ngā pegmatite granitic o Brazil, otirā ko ērā kei roto i te rohe o Minas Gerais. Ko ngā rohe pegmatite o Minas Gerais he tētahi o ngā puna nui rawa atu mō ngā minere phosphate, ā, kua puta mai he maha ngā tauira me ngā kristale brazilianite kua whanake pai. Ka noho māori te minere i ngā pōka me ngā wāhi hōhonu i roto i ngā pegmatite kua whakawhanake nui, kei reira ngā wai phosphate-katoa i te wā mutunga e whakarato ana i ngā āhuatanga matū e hiahiatia ana mō tōna kristalizatanga. Ka puta mai ngā tauira i ēnei wāhi tahi me te albite, te quartz, te muscovite, te apatite, me tētahi raupapa o ētahi atu minere phosphate.
Ko te rohe o Conselheiro Pena i Minas Gerais e mōhiotia whakamutunga ana mō te brazilianite, ā, kua puta mai ētahi o ngā tauira tino kitea o tēnei momo. I roto i ēnei pegmatites uaua, ka tipu noa te brazilianite hei karaihe takitahi, hei rōpū rānei i ngā wāhi hōhonu, e wātea ai te tipu. Kua puta mai hoki te brazilianite i ētahi atu wāhi pegmatitic o Minas Gerais, ahakoa ka rerekē te āhua, te tae, te mārama, me te rahi o ngā karaihe i waenganui i ia taonga. Ko te rerekētanga mineralogical o ēnei pegmatites e whakaatu ana i ō rātou koiora matū kua piki ake, me ngā wāhanga maha o te hanganga mineral i muri i te mutunga.
Kua kīia hoki te brazilianite mai i ngā wāhi kei waho o Brazil, ahakoa ka noho tonu ngā tūnga o Brazil hei mea nui rawa atu ki roto i ngā tuhinga mōhiohio minere me te hoko tauira. Ko ngā tūnga kei ngā whenua kē e hono ana ki ngā pegmatites granitic e whai phosphate nui, ki ngā taiao āhuarangi pērā rānei. Ko te whanonga o te brazilianite kei waho i tōna rohe momo e whakaatu ana kāore te minere e herea ki tētahi rohe āhuarangi kotahi, engari ko tōna hanganga e hiahia ana ki tētahi kohikohi motuhake o te phosphorus, te aluminum, te sodium, ngā wai e whai hydroxyl ana, me ngā āhuatanga tika i te wā whakamutunga o te pūnaha pegmatitic.
Nā te mea ka noho tōpū a brazilite i ngā pōkai iti, kaua ki te whakawhitiwhiti ōrite puta noa i tōna toka mātua, ka rerekē te kounga o ngā tauira ahakoa kei roto i te takiwā kohikohi kotahi. Ka hangaia ētahi wāhi he kīti iti, he opaque, he pakaru; ko ētahi atu ka taea te whakaputa i ngā tauira nui, he mārama, he mutunga kaha, me ngā mata kua whanake pai. He whai hua ngā mīhini hono hei whakamārama i ēnei rerekētanga, nā te mea ka whakaatu ngā huringa o te assemblage phosphate i ngā rerekētanga o te pāmahana, te āhua o te wai, te āhua oksidation, me te wātea o ngā wāhine matū rerekē i ngā wā whakamutunga o te hanganga pegmatite.
Brazilianite me ngā mineral ōrite
Ka taea e te brazilianite te āhua ōrite ki ētahi mīhini kōwhai, kōwhai-kākāriki rānei, he mārama hoki, ina puta mai hei kristara mārama, he poto rānei. Ka taea te whakawhitiwhiti i tōna āhua ki ngā mīhini pērā i te apatite, te chrysoberyl, te prehnite, me ētahi momo kōwhai o te quartz, te feldspar rānei. Heoi, ko ngā rerekētanga i roto i te pūnaha kristara, te kaha, te wehe, te taumaha motuhake, ngā āhuatanga optika, me te hanga matū ka hoatu i ngā tohu whakamārama hei wāwāhi i te brazilianite i ēnei momo e kitea ana he ōrite. Ko tōna putanga i roto i ngā pegmatites granitic e whai wāhi ana ki te phosphate he tohu hōhonu nui anō hoki.
| Kohuke | Tae Tae Tae | Pakeke | Pūnaha Kirikiri | Kōrero Tuhinga |
|---|---|---|---|---|
| Brazilianite | Kōwhai, kōwhai-kākāriki, kākāriki-māmā | 5.5 | Kōwhai rite | He kōhatu whitiwhiti mārama, he kākāriki-kōura, he hanga phosphate, he āhua motuhake o te wehenga |
| Apatite | Kākāriki, kōwhai, kikorangi, whero, kāore he tae | 5 | Heksagonal | He nui ngā wā ka hanga i ngā kōhatu porokita whetū e ono, ā, he iti ake tōna kaha. |
| Karioberi | Kōwhai, kōwhai-kākāriki, kākāriki, parapara | 8.5 | Kōwhai rite | He nui ake te uaua i te brazilite, ā, he kaha ake te manawanui me te taumaha motuhake. |
| Prehnite | Kākāriki mā, kākāriki kōwhai, kōwhai | 6–6.5 | Kōwhai rite | He nui noa te puta mai hei kohinga botryoidal, he rāwaho rānei, kaua ko ngā kirihou prismatic o te brazilianite |
| Kuarata | Korekore, kōwhai, parauri, whetū, kākāriki | 7 | Trikona | He kaha ake, kāore he wehewehe, ā, he rerekē rawa te hanganga matū |
| Feldspāra | Mā, kōwhiti, kākāriki | 6–6.5 | Monoklini, Tīkinikini | He tino wehenga me te whai ake o te kore e kitea i runga; he hononga noa ki ngā pegmatites |
I waenganui i ēnei mīraera, ko te apatite tētahi o ngā whakataurite e hōhonu ana nā te mea he mīraera phosphate ngā apatite me te brazilianite, ā, ka kitea tahi rāua i ngā taiao pegmatitic. Ka tipu noa ngā kīanga hexagonal prismatic o te apatite, engari ko te brazilianite he orthorhombic, ā, he nui ake te hanga i ngā kīanga roa me ngā pito rerekē. Ka āta rite te chrysoberyl ki te brazilianite kākāriki-kōura, otirā ki ngā kīanga mārama, engari ko tōna kaha kaha, arā, tata ki te 8.5, e wāwāhi ana i a ia mā te whakamātau kaha. He ngāwari hoki te wehe i te quartz ina taea te whakamātau tinana, nā te mea kei runga ake tōna kaha, ā, kāore ōna wāwāhi motuhake o te brazilianite.
Hei whakamārama tika, ko te āhua kanohi anake he kore e ranea i ngā wā e pā ana ki ngā tauira iti, kāore rānei i whanake pai. Ko te kaha, te wehewehenga, te taumaha motuhake, ngā āhuatanga aho, te hanga kristini, me te tātaritanga matū ka whakarato i ngā tikanga mōrearea ake. I roto i te horopaki whenu, ko te hononga ki ngā pegmatite graniti kua whanake nui, kua kī ki te phosphate, he tohu whakamātau hoki nā te mea ka kitea te brazilianite i te nuinga o te wā i te tahi atu minere phosphate o te wā whakamutunga.
Ngā whakamahinga o Brazilianite
Kāore te Brazilianite e whai wāhi nui ki ngā mahi ahumahi i te nui o ngā mīhini phosphate noa, nā te mea ka kitea ana i roto i ngā rahinga iti, ā, ehara i tētahi puna pūtaiao nui mō te phosphorus. Ko tāna tikanga matua he hangarau me te hītori whenua, kaua ko te ahumahi. Ka kohikohia ngā kōhatu pai-kaha hei tauira mīhini, ā, ko ērā e mārama ana, e whakaatu ana i ngā pito kaha, he whai hua rawa mō te rangahau i te hanganga kōhatu, ngā āhuatanga aho, me ngā hononga i waenganui i ngā mīhini phosphate rerekē i roto i ngā taiao pegmatitic uaua.
Ko te Brazilianite he minere whakataurite hoki i roto i ngā rangahau me te tautohetohe minere. Ko tōna hanganga matū motuhake, te hanganga kristini orthorhombic, te kaha waenga, te wehewehenga, ngā āhuatanga optika, me te tae kākāriki-koura ki te koura e waiho ana hei kohinga āhuatanga mātāmua hei whakamātau. Ka taea e ngā kairangahau te tirotiro i te brazilianite tahi me ngā minere phosphate e piri ana hei tātaritanga i te whanaketanga matū o ngā pegmatites me ngā tukanga e whakaputa ana i te kristinitanga phosphate i te wā mutunga. Ka taea hoki e ngā rangahau minere te whakamahi i ngā kristini takitahi hei tātaritanga kristiografi, spectroscopic, me te matū.
Hei ahuatanga o te brazilianite kounga teitei he mea whai take ki ngā kaitapahi minere me ngā whare taonga. Ko ngā krista mārama, he tae kōwhai kaha, he pito mārama, he āhua ataahua, me te iti noa o te koha, he mea nui ake mō ngā kohinga i te rauemi kua pakaru rawa, kua hē te hanganga. Ka taea te whakaatu i ngā tauira hei krista takitahi, hei rōpū krista, hei tauira mata e whakaatu ana i te hononga i waenganui i te brazilianite me ngā minere pegmatite kaiwhakahaere. Ko tōna uara ki ngā kohinga ka whakatauria e te kounga o te krista, te wāhi, te ahua, me te tikanga minere, kaua e ngā whakamahinga ā-koiora e whānuitia ana.