the.com/quartzite
sandstone that got squeezed so hard it forgot how to be soft.
means A hard, non-foliated metamorphic rock formed when quartz-rich sandstone is fused by intense heat and pressure into a dense, interlocking mass of quartz crystals.
from Built straight on "quartz," a word German miners gave us — "Quarz" — of murky Slavic-tinged origins, possibly related to a word for "hard" or "dwarf-ore." The "-ite" is the standard mineralogical tail, from Greek "-ites," meaning "of the nature of" — the same suffix geologists pin onto half the rocks they name. So the word literally announces: stuff made of quartz.
- birth
- Sandstone cooked under heat and crushing pressure
- hardness
- Scratches glass and most kitchen knives
- impostor alert
- Often sold as marble to fool buyers
- acid proof
- Lemon juice can't etch it like marble
- ancient quartz
- Made almost entirely of fused quartz grains
itapecerica quartzite — brazilian rock formation in são paulo state, 2.8 billion years old, among earth's oldest known quartzite
hard quartzite machadinho — quartzite range in minas gerais, brazil, exploited for industrial stone since the 1980s
baraboo quartzite — 1.7 billion-year-old quartzite ridges in wisconsin, forms the scenic baraboo hills