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Quartz - Wikipedia There are many different varieties of quartz, several of which are classified as gemstones Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Europe and Asia
Quartz Quartz is a guide to the new global economy for people who are excited by change We cover business, finance, economics, technology, lifestyle, and leadership
Quartz Mineral | Photos, Uses, Properties, Pictures Quartz is a mineral composed of silicon and oxygen, with a chemical composition of SiO 2 It is the most abundant mineral in Earth's crust and is resistant to both chemical and physical weathering
Quartz | Definition, Types, Uses, Facts | Britannica Quartz, widely distributed mineral of many varieties that consists primarily of silica, or silicon dioxide Minor impurities such as lithium, sodium, potassium, and titanium may be present Quartz has great economic importance Learn more about quartz in this article
Quartz for all time - Nature Geoscience From the tools of Stone Age ancestors to records of Earth’s history, Yang Li and Xian-Hua Li explore how the properties of quartz place it at the heart of human innovation
Quartz - Minerals Education Coalition Quartz is one of the most common minerals in the Earth’s crust As a mineral name, quartz refers to a specific chemical compound (silicon dioxide, or silica, SiO 2), having a specific crystalline form (hexagonal)
Quartz: Mineral information, data and localities. - mindat. org Quartz has been known and appreciated since pre-historic times The most ancient name known is recorded by Theophrastus in about 300-325 BCE, κρύσταλλος or kristallos The varietal names, rock crystal and Bergkristall (German), preserve the ancient usage