French chalk
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > metamorphic rock > soapstone (metamorphic rock)
Descripción
A high grade of massive talc occurring in the Appalachian region in the United States that can be cut to shape and used for marking purposes; it is usually white in color but may be colored gray or yellow by impurities.
URI original del concepto
Otros términos
- Franse kalk [nl]
- creta francesa [es]
- chalk, French [en]