Yashi silica, wanda kuma aka sani da silica ko yashi quartz.Yana da wani barbashi refractory tare da ma'adini a matsayin babban ma'adinai bangaren da kuma wani barbashi girman 0.020mm-3.350mm, wanda aka raba zuwa wucin gadi yashi silica da na halitta silica yashi kamar wanke yashi, goge yashi, da kuma zaba (flotation) yashi bisa ga. hanyoyi daban-daban na hakar ma'adinai da sarrafawa.Yashi na silica mai wuya ne, mai jurewa, ma'adinin silicate na sinadarai, babban abun da ke ciki na ma'adinai shine SiO2, launi na yashi silica fari ne mai farar fata ko mara launi, taurin 7, karyewa ba tare da tsagewa ba, karye-kamar harsashi, mai haske, dangi yawa na 2.65, da sinadaran, thermal da inji Properties suna da bayyananne anisotropy, insoluble a cikin acid, dan kadan mai narkewa a cikin KOH bayani, narkewa batu 1750 °C.Launi yana da farin madara, rawaya mai haske, launin ruwan kasa da launin toka, yashi silica yana da tsayayyar wuta.