Soapstone (metamorphic rock)
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > metamorphic rock
Descripción
A very soft rock composed primarily of hydrated magnesium silicate. It is easily cut and has been used for carvings since ancient times. It is usually a white, grayish green, brown or in rare cases, red or black. The stones were carved for bowls, boxes, and small objects such as figurines, beads, seals, amulets, and scarabs. In modern construction, it is used for laboratory sinks, bench tops, and electrical panels. Native soapstone is so soft it can be scratched with a fingernail, but baking results in dehydration and hardening of the stone. Some ancient soapstone carvings were glazed then fired, which produced the mineral enstatite, hard enough to scratch glass.
Subcategorías
URI original del concepto
Otros términos
- steatite [it]
- 皂石 [zh]
- zeepsteen (metamorf gesteente) [nl]
- stéatite (roche métamorphique) [fr]
- saponita [es]
- zào shí [zh]
- zao shi [zh]
- tsao shih [zh]
- soap stone (metamorphic rock) [en]
- soap-stone (metamorphic rock) [en]
- steatite (soapstone) [en]
- soap rock [en]
- pietra saponaria [it]
- steatiet [nl]
- speksteen [nl]
- pierre de savon [fr]
- pierre savonneuse [fr]
- saponite [fr]
- esteatita (mineral) [es]