FELT-Spar or FIELD-Spar, a mineral substance. See MINERALOGY INDEX.
FELT-Spar or FIELD-Spar
sub_entry · 67 chars · lineage ↗ · page image at NLS ↗
sub_entry · 67 chars · lineage ↗ · page image at NLS ↗
FELT-Spar or FIELD-Spar, a mineral substance. See MINERALOGY INDEX.