1) Mineral 2) Relating to or made of quartz 
• (a.) Containing, or resembling, quartz; partaking of the nature or qualities of quartz.
An adjective used in reference to a rock that is composted primarily of quartz.
Quartz'ose` adjective [ Confer French quartzeux , German quarzig .] (Min.) Containing, or resembling, quartz; partaking of the nature or qualities of quartz. 
adjective relating to or made of quartz