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Gemstone Terminology - Earth Mother Crafts

Terminology *Information regarding gemstone lore and metaphysical properties has been compiled from various sources and is for entertainment purposes only....

List of the Common Molecules - Reciprocal Net

Reciprocal Net is funded by the U.S. National Science Foundation as part of the National Science Digital Library project....

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Quartz: Quartz mineral information and data. - …

Quartz is the most common mineral found on the surface of the Earth. If pure, quartz forms colorless, transparent and very hard crystals with a glass-like luster....

Quartz - Wikipedia

Quartz is the second most abundant mineral in Earth's continental crust, after feldspar. Its crystal structure is a continuous framework of SiO 4 silicon–oxygen ......

Tectosilicates & Other Minerals - Tulane University

Quartz. Quartz is hexagonal and commonly occurs as crystals ranging in size form microscopic to crystals weighing several tons. Where it crystallizes ......

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Phases – The Physics Hypertextbook

Indefinite melting point. No plateau on heating/cooling curve. Glasses are nonequilibrium materials, so their physical properties depend on the process used to make them....

SILICA DUST, CRYSTALLINE, IN THE FORM OF …

Silica dust, crystalline (quartz or crystobalite) 1.3.2 Quartz crystals Quartz has been used for several thousand years in jewellery as a gem stone (e.g. amethyst,...

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Excalibur Mineral Corporation - Current List

Current List: Each month, we offer an abbreviated selection of minerals from our inventory of over 200,000 samples. If you don't see what you're ......

Wondrous Items :: d20srd.org - The Hypertext …

Wondrous Items. This is a catch-all category for anything that doesn’t fall into the other groups. Anyone can use a wondrous item (unless specified otherwise in the ......

States of matter: introduction - Chem1

What distinguishes solids, liquids, and gases– the three major states of matter— from each other? Let us begin at the microscopic level, by reviewing what we know ......

List of Minerals - Sandatlas

List of the Rock-Forming Minerals with Pictures, Chemistry, and Links to Separate Articles about each Mineral Species....

無水ケイ酸とは - Weblio辞書

無水ケイ酸とは? 二酸化ケイ素(にさんかケイそ、英: silicon dioxide)はケイ素の酸化物で、地殻を形成する物質の一つとして ......

The Quartz Page: The Silica Group

The basic structural element of silica is the SiO 4 tetrahedron. Quartz consists of interconnected SiO 4 tetrahedra that build up a rigid three-dimensional network ......

Silicon dioxide - Wikipedia

Silicon dioxide, also known as silica (from the Latin silex), is a chemical compound that is an oxide of silicon with the chemical formula Si O 2. It has been known ......

GSA Publications - Data Repository - 2016

File size estimates are shown at the end of large entries. If you wish to download without launching Acrobat, right-click (option-click for Mac) on the link. Data ......