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Chemical Formula For Cummingtonite. Jump to navigation Jump to search. Mg 7 Si 8 O 22OH 2. Molecular Weight 78082 gm Magnesium 2179 Mg 3613 MgO Silicon 2878 Si 6156 SiO 2 Hydrogen 026 H 231 H 2 O Oxygen 4918 O _____ _____ 10000 10000 TOTAL OXIDE. Derivation of Name The mineral Cummingtonite gets its name from Cummington Massachusetts where it was discovered in 1824.
Mg 7 Si 8 O 22OH 2. Search chemicals by name molecular formula structure and other identifiers. Search and explore chemical information in the worlds largest free chemistry database. Mg 7 Si 8 O 22OH 2. Cummingtonite Cummingtonite CategoryMineral Chemical formulaMgFe7Si8O22OH2 Identification ColorDark green - brown Crystal habitRarely as distinct. Any suggestions on diagramming the chemical structure for cummingtonite.
All three minerals formulae are essentially the same.
Cummingtonite was originally named in 1824 by Chester Dewey for the type locality in Cummington Massachusetts USA. Search chemicals by name molecular formula structure and other identifiers. Molecular Weight 78082 gm Magnesium 2179 Mg 3613 MgO Silicon 2878 Si 6156 SiO 2 Hydrogen 026 H 231 H 2 O Oxygen 4918 O _____ _____ 10000 10000 TOTAL OXIDE. As bladed columnar or brous crystals and brous aggregates to 20 cm. Leake 1978 published a report assigning cummingtonite the wide range MgMg Fe 03-07. Actual physical description and chemical analyses for cummingtonite were provided by Thomson 1831 and subsequently improved by Smith and Brush 1853.