![]() Carnelian, Chrysoprase and bloodstoneĬhert is the general term applied to the granular cryptocrystalline Chalcedony is the general termĪpplied to the fibrous cryptocrystalline varieties.Īgate is an example of a fibrous cryptocystallineīanded chalcedony variety of quartz. The cryptocrystalline varieties of quartz may be separated into two types įibrous and microgranular. Macrocrystalline quartz grains with disseminated grains of other color imparting minerals. Some of the macrocrystalline quartz varieties are: Amethyst, Ametrine, Cat's-eye Quartz, Citrine, Phantom Quartz, Rock Crystal, Rose Quartz, Rutile in Quartz and Smoky Quartz.īlue Aventurine Quartz and Green Aventurine QuartzĪre actually quartzites (a rock, not a mineral) composed essentially of interlocking Macrocrystalline quartz in which individual crystals are distinguishable with the naked eye,Īnd cryptocrystalline quartz in which the individual crystals are too small to be easily distinguishable under the Size of the individual grains or crystals ![]() Quartz varieties are commonly separated into two groups based on the Of igneous, metamorphic and sedimentary rocks. It makes up about 12% of the earth's crust, occurring in a wide variety Quartz is the most abundant single mineral on earth. Transparency: opaque to translucent, rarely transparent.Terminated by a combination of positive and negative rhombohedrons forming Crystal habit: Natural rose quartz is usually massive with occasional contact crystalįaces, occurs rarely as small horizontally striated hexagonal prisms. ![]() ![]() Crystal system: Hexagonal-Rhombohedral 32 (trigonal-trapezohedral).Rose Quartz chemical composition: SiO 2.Return to the Index of Rose Quartz Information Topics (Select any link to enter our Online Store) Rose Quartz Mineral Specimens ![]()
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