Izinsizakusebenza ezingavuseleleki zifaka leyo ngcebo yemvelo engabuyiswanga ngokwenziwe noma ngokwemvelo. Lezi cishe zonke izinhlobo zezinsizakusebenza nezimbiwa, kanye nezinsiza zomhlaba.
Amaminerali
Izinsizakusebenza zamaminerali kunzima ukuzihlukanisa ngokomgomo wokukhathala, kepha cishe wonke amadwala namaminerali yizimpahla ezingavuseleleki. Yebo, bahlala bakha ngokujulile ngaphansi komhlaba, kepha izinhlobo zazo eziningi zithatha iminyaka eyizinkulungwane nezigidi zeminyaka, kuthi emashumini noma emakhulwini eminyaka, zimbalwa kakhulu zazo ezakhiwayo. Isibonelo, imali yamalahle manje seyaziwa ukuthi isukela eminyakeni eyizigidi ezingama-350.
Ngezinhlobo, yonke imivubukulo ihlukaniswe uketshezi (uwoyela), okuqinile (amalahle, imabula) negesi (igesi yemvelo, i-methane). Ngokusetshenziswa, izinsiza zihlukaniswe zaba:
- umlilo (i-shale, i-peat, igesi);
- i-ore (i-iron ores, i-titanomagnetites);
- okungeyona insimbi (isihlabathi, ubumba, i-asbestos, i-gypsum, i-graphite, usawoti);
- amatshe ayigugu ayigugu futhi ayigugu (idayimane, ama-emeraldi, ijaspi, i-alexandrite, i-spinel, i-jadeite, i-aquamarine, itopazi, i-rock crystal).
Inkinga ngokusetshenziswa kwezinsalela zamathambo ukuthi ngokuthuthuka kwenqubekela phambili nobuchwepheshe, abantu bayazisebenzisa kakhulu futhi ngamandla, ngakho-ke ezinye izinhlobo zezinzuzo zingaphela ngokuphelele kuleli khulu leminyaka. Lapho izidingo zesintu zokwanda kwemithombo ethile zanda, kusetshenziswa ngokushesha izinsalela eziyisisekelo zeplanethi yethu.
Izinsiza zomhlaba
Ngokuvamile, izinsiza zomhlaba ziqukethe yonke inhlabathi ekhona emhlabeni wethu. Ziyingxenye ye-lithosphere futhi ziyadingeka empilweni yomphakathi wesintu. Inkinga ngokusetshenziswa kwezinsiza zenhlabathi ukuthi umhlaba usetshenziswa ngokushesha ngenxa yokuphela komhlaba, ezolimo, ukugwaduleka, nokubuyiselwa komhlaba akubonakali emehlweni esintu. Kwakhiwa kuphela amamilimitha amabili enhlabathi unyaka nonyaka. Ukugwema ukusetshenziswa okugcwele kwemithombo yomhlaba, kuyadingeka ukuthi uyisebenzise kahle futhi uthathe izinyathelo zokubuyiselwa.
Ngakho-ke, izinsizakusebenza ezingavuseleleki ziyingcebo ebaluleke kakhulu eMhlabeni, kepha abantu abazi ukuthi bazilahla kanjani ngokufanele. Ngenxa yalokhu, sizoshiya izizukulwane zethu zimbalwa kakhulu izinsiza zemvelo, futhi amanye amaminerali ngokuvamile asengozini yokusetshenziswa ngokuphelele, ikakhulukazi uwoyela negesi yemvelo, kanye nezinye izinsimbi ezibalulekile.
