Silica is synonymous with silicon dioxide (SiO2). Silicon and oxygen are the two most abundant elements in the earth’s crust. Silica is commonly found in nature as sand. Silica exists in many different forms that can be crystalline as well as non-crystalline (amorphous).  More….

The information for this document has been drawn from a number of sources, mainly from an old edition of Lange’s Handbook of Chemistry, and Orsino Smith’s “Identification and Qualitative Chemical Analysis of Minerals.”  Continue reading….

Four Bucket DustWatch unit

Mineral search by chemistry – Simple click adds element for the search (black). Additional click excepts the element from the search (red). Considered elements are shown emphasized (bold, white background). You can also enter a search string and select a locality from the displayed results to get minerals from this locality only.  See table…..