Assertion: mineral | /r/HasProperty | based on chemical composition
Facets:
Source sentences:
text: Many scientists contributed to the discovery of mineral chemical formulas, but James Dwight Dana, a mineralogist at Yale University from 1850 to 1892 (see Biography link in the Resources section), developed a classification system for minerals based on chemical composition that has survived to the present day.
text: By the early 1800s, however, Berzelius had begun classifying minerals based on their chemical composition rather than on their physical properties, defining groups such as the oxides and sulfides – and, of course, the silicates.