Rock 365 : Day 123 : Wolframite

20100503

Day 123 : This is wolframite, a tungsten mineral (and hence W as the
chemical symbol for tungsten). This specimen is from the Dolcoath
Mine, Cambourne, Cornwall. Cotton Collection, Keele.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>