No CrossRef data available.
Article contents
Abstract
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

- Type
- Letter
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 1 , Issue 7 , November 1877 , pp. 269
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1877