Ko te Millerite he kohuke nickel sulfide motuhke, ko tōna tātai matū ko NiS, e mōhiotia ana i roto i te hapori kohuke mō tōna āhua tino motuhke o te whakatipu tioata me ōna pānga nui ki te matawhenua. Ahakoa he kohuke nickel iti ake tōna mana ki te whakatairite ki ngā pūtake matua pērā i te pentlandite, e tino whakanuia ana mō tōna putanga motuhke i roto i ngā uaua waiariki iti-te-mahana, ā, hei hua whakakapinga tuarua i roto i ngā taiao e nohoia ana e te waro. Ko te āhuatanga tino whakatau o te Millerite ko tōna hanganga tioata trigonal, e puta tata ana anake hei puka roa, hei puka acicular, hei puka capillary rānei. Ko ēnei tioata kikokore, rite-makawe, ka tupu i roto i ngā kāhui irirangi, i ngā papatipu rite-kōhanga rānei e whīwhīwhīwhī ana i roto i ngā kohao toka, e whakaatu ana i te kanapa konganuku pīataata mai i te kōwhai-parāhi kōmā, ki te tae parāhi hōhonu ake ina pōuri. I tua atu i tōna ātaahua ki ngā kaikohi, ka whakarato te Millerite i ngā raraunga nui e pā ana ki ngā āhuatanga matawhenua o tōna hanganga, e tipu ana i roto i ngā taiao e pāhekoheko ai ngā wai nickel-ki tonu ki te whanariki i ngā mahana iti, i te nuinga o te wā e piri ana ki ngā kohuke pērā i te dolomite, te calcite, me ētahi atu sulfide pērā i te chalcopyrite. I runga i te taha matawhenua, ko tōna noho mai hei tohu i ngā tukanga whakarewa motuhke i roto i ngā serpentinite, hei kohuke whakakapi rānei i roto i ngā toka e mau ana i te nickel, ā, me tōna pakeke Mohs e 3 ki te 3.5 me tōna taumaha motuhke teitei e tata ana ki te 5.3 ki te 5.5, ko ōna tioata tino kikokore me te pīoioi e kore e kitea ngā tauira e tino tiakina ana, e kore e pakaru, e whakapūmau ana i tōna mana hei taonga nui i roto i ngā pātengi raraunga kohuke pūnaha me ngā rangahau matawhenua motuhke.
Ko te Hanganga me te Whanaketanga o te Millerite
Ko te nuinga o te whakaputanga o te Millerite mā roto i ngā tukanga waiariki iti-mahana, e puta ana i ngā kōhao, ngā rua, me ngā uaua o ngā toka parataiao pēnei i te kōhatu kawakawa me te dolomite. Ka tioata ina pāhekoheko ngā wai e mau ana i te nikera ki te whanariki i ngā mahana āhua, e tuku ai i te kohuke kia whakaheke haere ki ōna āhua ngira-rite. I tua atu i te whakaheke waiariki tuatahi, ka kitea nuitia te Millerite hei kohuke tuarua i ahu mai i te panonitanga o ētahi atu whanariki nikera, i te whakawhārikinga rānei o ngā toka ultramafic, e tohatoha ai ngā wai hurihuri i te nikera ki ngā whati toka.
I roto i te hītori, i whakaahuatia ōkawatia te kohuke i te tau 1845 e Wilhelm Haidinger, nāna i whakaingoa hei whakahōnore i a William Hallowes Miller, te tohunga kohuke o Ingarangi nāna ngā Tohu Miller e whakamahia ana i roto i te whakatakotoranga kiripiri. I mua i tēnei whakarōpūtanga ōkawa, i kīia nuitia ko te “pyrite makawe” rānei “pyrite huruhuru” nā tōna kanapa parāhi me ōna tioata tino angiangi, rite ki te miro. Ko ngā kitenga rongonui o te rau tau 1800 i ngā rohe pērā i Bohemia me te Maina Gap i Pennsylvania i whakarato i ngā tauira tuatahi mō te rangahau, i āwhina ai ngā kairangahau ki te whakarōpū i tōna hangarite tapatoru me te whakatū i tōna wāhi i roto i te rangahau whānui o te pūtawa whakapākoko.
Ngā Momo me ngā Tikanga noa o te Millerite
Ko te āhua o te ngira me te āhua o te whāiti
Ko te tenei te ahua tino mohiotia o Millerite. He tino kikokore, he ngira-rite (acicular) he huruhuru-rite (capillary) ngā tioata. Ka tipu ēnei i roto i ngā kāhui whiti, i ngā papatipu whīwhiwhi, rite-kōhanga rānei i roto i ngā kōhao toka. Ahakoa te ngāwari o ēnei tioata, ka mau tonu te kanapa konganuku me te kōwhai-parāone mārama, e tino rapuhia ana e ngā kaikohi.
Ngā Āhua Nui me te Kirikiri
I roto i ētahi horopaki kōhatu whakarewa ahumahi, kāore a Millerite e hanga i ngā ngira ngāwari, engari ka puta hei whakahiato mātotoru, nui, kirikiri rānei. I tēnei āhua, kāore i a ia te ātaahua kitea o te momo kāpiti, ā, he maha ngā wā ka uru ki roto i ētahi atu kohuke sulfide. Ko ēnei āhua nui e tautuhia ana mā te whakamātau matū, mā te tirotiro moroiti rānei, kaua mā te tirotiro kanohi.
Whakarerekētanga me ngā Wāhanga Tuarua
He maha ngā wā ka puta te Millerite hei kohuke tuarua i te panonitanga o ētahi atu pūkohu whai-nikera. Hei tauira, i roto i ngā toka ultramafic, ka huri pea te pentlandite tuatahi hei Millerite nā te mahi waiariki o ngā wā whakamutunga. I ētahi wā, ka whakakapihia pea te Millerite e ētahi atu kohuke, ka puta he pseudomorphs e huri ana te hanganga o roto, engari e mau tonu ana te āhua o waho rite ki te ngira.
Ngā Huihuinga Āhuahanga Whenua Motuhake
Ko te nuinga o te wā ka whakarōpūtia te Millerite e tōna taiao kāinga, e whakatau ana i tōna āhua tinana:
Whakamahia e te Kāpōnati: Ka kitea i roto i ngā geode i roto i te pākeho, te dolomite rānei, he rite tonu te āhua ki ngā ngira parakore, mokemoke i te taha o te calcite, te fluorite rānei.
Whakaaroaro Tāwharau-Sulfide: Ka puta ki roto i ngā uaua waiariki hōhonu e hono ana ki te chalcopyrite me te pyrrhotite, e kitea ana i ngā rohe keri nikela matua.
Ngā Whakamahinga Whaihua me te Uara o te Millerite
Ko te mahi matua a te Millerite hei puna motuhake mō te konukawata, ka keria mō te nui o te whakarewa kei roto, ka tukatukia hei whakamahi i te hanga maitai kore waikura, nga koranu kaha-nui, me nga waahanga pākahiko mō te rāngai pūngao whakahou. Ahakoa he iti ake i nga kōreko matua pēnei i te pentlandite, nā tōna ōwehenga nui o te konukawata-ki-te whanariki ka waiho hei kōreko tuarua whai hua i roto i nga putunga whenua motuhake. I tua atu i te tangohanga tika, ka noho te kōhuke hei tohu rautaki i roto i te matawhenua ōhanga; ko tōna noho i roto i nga pūtake wero ka āwhina i nga kaimātai whenua ki te mahere i te panoni matū o ngā pūnaha waiariki me te kimi i ngā rohe whānui o te whakarangatira konukawata. I roto i te hapori pūtaiao, ko tōna hangarite tapatoru motuhake me tōna āhua ngira e whakarato ana i nga raraunga whaihua mō ngā kairangahau e ako ana i te tipu karaihe me te hihiko wai. I tua atu, he nui te uara o te Millerite i roto i te mākete tauira kōhuke motuhake, kei reira ngā tautau pai e hokohoko ana i waenga i ngā whare taonga me ngā kaikohi takitahi hei tauira onge o te whakakoihau whanariki ahurei.