Introduction of accessory minerals in Bon-do-no granite, East of Bavanat (Fars province)

Bon-do-no granite located at ۲۳۰ km Eastern north of Shiraz in the Center of Kuh-Sefid, anticline. Tutak metamorphic complex, is a part of Sanandaj-Sirjan matamorphic zone. Field studies shows that: ۱- This metamorphic complex parent rock , have between lower to upper Paleozoic age and the metamorphism casualty accured before upper Jurassic and included by paragenesis of Micaschist, Amphibolite, Marble and Greenschist. ۲-After this accurance Tutak complex intruded by granite intrusive and the contact metamorphic accured in a margin Rock of this intrusive mass. Field studies and labratuary research shows that this granitic intrusive mass have a various accessory minerals like Garnet, Tourmaline, Amphibole, Sphen, Zircon, Rutile, Allanite and Apatite. XRD Analysis test at a Garnet,Tourmaline and Amphibole , shows that type of Garnet is Spessartine (Mn۳Al۲Si۳O۱۲), Tourmaline is Schorl [ Na(Fe,Mn)۳Al۶B۳Si۶O۲۷(OH,F)۴] and Amphibole is Actinolite [Ca۲(Mg,Fe)۵Si۸O۲۲(OH)۲] and Richterite [Na۲Ca(Mg,Fe,Mn,Al)Si۸O۲۲(OH,F)۴].

Keywords:

Sanandaj-Sirjan Zone , Spessartine , Schorl , X ray diffraction