Wollastonite is a naturally occurring mineral which is a chemical combination of Calcium, Silicon and Oxygen. Wollastonite is formed when limestone or other high-calcium rocks undergo high temperature and pressure changes sometimes in the presence of silica-bearing fluids such as in skarns or contact metamorphic rocks.
This highly versatile mineral is characterized by its high whiteness, unique needle-like, or ‘acicular’, structure, high brightness, low moisture and oil absorption, and high heat stability.
Kaolin is a rock from which the clay mineral kaolinite is derived. This one has been used for millennia as the principal ingredient in porcelain tableware. It is a hydrated aluminum silicate crystalline mineral formed over many millions of years by the hydrothermal decomposition of granite rocks.
Quartz is one of the most common and well-known minerals on the planet. Best known as the principal constituent of glass, quartz offers multiple other uses ranging from construction granulates to solar panels. It is a hard, crystalline mineral composed of silicon and oxygen atoms and the second most abundant mineral in the planet’s crust, after the feldspar family of minerals.
Quartz is a defining constituent of granite and other felsic igneous rocks. It is common in sedimentary rocks such as sandstone and shale as well as schist, gneiss, quartzite and other metamorphic rocks.