Aragonite, a dimorphous form of calcium carbonate, which crystallises in the orthorhombic system, is very often twinned in its growth. It occurs as a deposit from hot springs and in association with beds of gypsum. The shells of certain molluscs are made of aragonite and many fossil shells now composed of calcite were probably […]
Lavender Quartz: A variety of Rose Quartz. In addition to the qualities of rose quartz, this mineral has also been used to stimulate the third-eye, to promote clairaudience, and clairvoyance, and to further communication on the physical plane. Lavender brings serenity, well being, peace and connection with the universe.
Gypsum is a hydrous calcium sulphate, when well crystallised producing excellent transparent monoclinic crystals, which are often twinned in swallow-tail forms. Such crystals of gypsum are called selenite, for the crystals tend to show moon-like iridescence from the cleavage surfaces.
It is usually formed by the evaporation of an enclosed sea basin, or may […]