elvan (Q43566)
From geokb
A Cornish mining term for dyke rocks of granitic composition containing phenocrysts of quartz and orthoclase with tourmaline occurring as isolated crystals and radiating groups
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | elvan |
A Cornish mining term for dyke rocks of granitic composition containing phenocrysts of quartz and orthoclase with tourmaline occurring as isolated crystals and radiating groups |
