Crystal system groups minerals by the internal atomic pattern their crystals repeat. Wikipedia notes that "quartz exists in two forms, the normal alpha-quartz and the high-temperature beta-quartz, both of which are chiral," each with its own geometric structure. This dimension lets a visitor compare minerals that share the same underlying crystal geometry.
Facts
Comparison
Formation OriginA dominant halide anion (F-, Cl-, Br- or I-). 1 Cubic (Isometric)
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Connections
Sources
1. Wikipedia: Halide minerals
WikipediaHalide minerals, lead sectionQuote, Halide minerals, lead section
Halide minerals are those minerals with a dominant halide anion (F-, Cl-, Br- and I-).
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