Chemical Formula: SiO2

Chemical Name: Silicon Dioxide

Mineral Class: Tectosilicate

Mineral Notes: Quartz is a widely found rock-building material found in many shapes and forms. It is one of the most commonly used materials by people, having uses in glass manufacture, electronic equipment, jewelry, decoration and in ancient days for producing sparks to start fires.

Description: An unusual specimen consisting of a massive Quartz nodule, through which runs a vein of highly crystalline Amethyst. What makes this specimen rare is the fact that the colour of the mineral is a violet-red rather than the more common purple. Also, under magnification, some of the crystals show small granular inclusions. these are possibly Hematite.

Location: Wanlockhead, Scotland.