Coesite Coesite,, a high pressure polymorph (crystal form) of silica, silicon dioxide (SiO2). It has the same chemical composition as the minerals cristobalite, stishovite, quartz, and tridymite but possesses a different crystal structure.
Seminar 2010 ..thelancet Vol 379 May 26, 2012 Tuberculosis risk increases with severity of silicosis, and in acute and accelerated silicosis.3739 Silica exposure increases tuberculosis risk even without sili cosis.37,38 In developing countries, mineral mining (particularly gold
coesite cristobalite and stishovite which are mineral
coesite, cristobalite and stishovite which are mineral forms of silica that are stable at high temperatures and pressures. All these minerals are also silicates. In other words, quartz is a silicate made of pure silica.