Nota de aplicación
Transparent, naturally-occurring calcite crystal used in demonstrating the polarization of light. An oblong stone made of Iceland spar found in the wreck of a 16th-century English warship in 2013 has led archaeologists to speculate that the crystal is one and the same as the sunstone, a near-mythical navigational aid said to have been used by Viking mariners.
Ubicación jerarquía
- faceta materiales
- .. materiales (nombre jerárquico)
- .... material
- ...... <materiales por composición>
- ........ material inorgánico
- .......... mineral
- ............ calcita
- .............. Iceland spar