Garin tourmaline wani sinadari ne da aka niƙa da kyau wanda aka samo daga tourmaline, wani sinadari mai rikitarwa na borosilicate wanda aka san shi da nau'ikan sinadarai daban-daban da kuma halayensa na zahiri. Tsarin sinadarai na tourmaline gabaɗaya shine NaR3Al6(Si6O18)(BO3)3(OH,F)4, inda R zai iya zama ions na ƙarfe daban-daban kamar ƙarfe, magnesium, lithium, ko manganese, waɗanda ke ba tourmaline launuka da halaye iri-iri.

An samar da tourmaline a ƙarƙashin takamaiman yanayin ƙasa, yawanci yana samo asali ne daga duwatsun pegmatite da yanayin zafi mai yawa, mai matsin lamba mai yawa. A cikin duwatsun pegmatites, waɗanda suke da kauri - masu launin igneous, lu'ulu'u na tourmaline suna girma daga mafita na hydrothermal mai wadataccen boron, aluminum, silicon, da sauran abubuwa masu mahimmanci a lokacin lu'ulu'u na magma na ƙarshen mataki. A halin yanzu, a cikin duwatsun metamorphic, tourmaline yana samuwa ne sakamakon halayen sinadarai tsakanin ma'adanai daban-daban a ƙarƙashin zafi mai tsanani da matsin lamba, kamar lokacin gina tsaunuka.

Yankunan da ke samar da tourmaline a duk duniya suna ba da gudummawa sosai ga samar da tourmaline foda. Brazil ta yi fice a matsayin babbar tushe, tana da tarin ma'adanai saboda tarihinta mai yawa wanda ke cike da ayyukan igneous da metamorphic. Sri Lanka kuma tana taka muhimmiyar rawa, tare da tsarin ƙasa na musamman wanda ke taimakawa wajen samar da tourmaline. Madagascar, wacce aka san ta da wadataccen nau'ikan ma'adanai, tana ba da adadi mai yawa na tourmaline mai inganci. A China, Xinjiang da Yunnan muhimman tushen gida ne, inda yanayin ƙasa mai rikitarwa da motsi na tectonic masu aiki ke haifar da yanayi mai kyau don samar da tourmaline ma'adinai.

Bayan hakar ma'adinan tourmaline, ana yin jerin matakai na sarrafawa don ya zama foda. Da farko, ana niƙa shi zuwa ƙananan gutsuttsura don rushe tsarin dutsen. Daga baya, ta hanyar niƙa da niƙa, ana ƙara tace ma'adinan zuwa ƙananan ƙwayoyin cuta. Sannan ana gudanar da ayyukan tsarkakewa don kawar da ƙazanta kamar sauran ma'adanai, yumbu, da abubuwan halitta, wanda ke tabbatar da tsarki da ingancin foda na tourmaline na ƙarshe.

Foda ta Tourmaline tana da amfani iri-iri. A fannin lafiya da walwala, ana matuƙar daraja ta saboda keɓancewarta ta musamman ta lantarki da zafi. Idan aka yi hulɗa da jikin ɗan adam ko wasu wurare, foda ta tourmaline na iya samar da ƙarancin wutar lantarki da kuma hasken infrared mai nisa. Ana kyautata zaton waɗannan kaddarorin suna haɓaka zagayawar jini, suna haɓaka metabolism, kuma suna iya inganta lafiyar jiki gaba ɗaya. A fannin kayan kwalliya, ana ƙara ta a cikin kayayyakin kula da fata don tasirin danshi, hana tsufa, da kuma sanyaya fata. A ɓangaren muhalli, ana iya amfani da foda ta tourmaline don tsarkake ruwa da iska, domin tana iya shanye abubuwa masu cutarwa. Bugu da ƙari, a masana'antar gini da yumbu, ana haɗa ta cikin kayan don inganta halayensu na zahiri, kamar ƙarfi da dorewa. Gabaɗaya, iyawar foda ta tourmaline ta sanya ta zama muhimmin abu a aikace-aikace na zamani daban-daban.