Friday, 10 January 2014


Apologies for the lack of activity on this blog for the last few months, most of my free time has been spent working on the new Geosec Mineral Identification Assistant (MIA for short).

I have completed pages for the most common minerals, see links below. Less common and accessory minerals pages will follow as time allows. There are many pages still to do, so this project will take quite a while to complete, but I hope it will assist in some small way in identifying what you are looking at when viewing thin section slides through a microscope.

Common Rock Forming Minerals
Mineral Abr. Status
Ol Active
Cpx. Active
Opx. Active
Hbl. Planning
Plag. Constructing
Afs. Constructing
Qtz. Constructing
Bt. Planning
Ms. Planning
Grt. Constructing
Cal. Constructing
Click on the Mineral name to go to MIA page for that mineral.

This assistant does not try to be a technical study of minerals, it is a visual guide to enable you to recognize what a certain mineral may be, so you can refer to a more detailed  description in an optical mineralogy text. 
The same mineral may look quite different in rocks of varying sources, so viewing as many examples as possible is essential in order to become familiar with the appearance of the mineral. The cost of printing limits the number of photographs in any book or 'atlas', and removable labels or movie clips are not possible. This assistant attempts to do a little more than is possible in printed media.

The Mineral Identification Assistant is free to all, and is has no adverts. It is provided as a service to those who buy slides from Geosec, and is paid for by those sales. It will be maintained and expanded IF:

  1. It gets used. The more people use and view the MIA, the more encouraged I will be to spend time on it. Viewing statistics are monitored!
  2. Slides continue to sell. This is the only source of funds for development of the MIA.
So, if you like it, buy slides!


1 comment:

  1. Rob,

    These are beautiful images and quite the most helpful aid to thin section mineral identification that I've seen anywhere. It deserves large scale exposure on the web! I'll do my bit by flagging it up to my mailing list.

    The calcite twinning movie is superb!