Brilliant blue acicular crystals of clinoclase, forming rosettes and ball-shaped aggregates, on a bit of matrix. This is a beautiful thumbnail with unusually intense color. It was most likely found in the early to mid 1800s when this region was productive of specimens. Formerly in the collection and with label of Willard Perkins, the collector who invented the so-called "Perky Box" for thumbnails. Ex. John and Linda Stimson Collection.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
You are free:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page.
The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by a Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2010022810018255.
== {{int:filedesc}} ==
{{Information
|Description=
{{en|1=Clinoclase
:: Locality: United St. Day Mines, Cornwall, England
:: Size: thumbnail, 2.8 x 2.3 x 2.0 cm
::;Clinoclase
:: Brilliant blue acicular crystals of clinoclase,