Showing category "Mineralogy" (Show all posts)

KYAWTHUITE, THE RAREST MINERAL, FOR NOW…

Posted by Site Moderator Webmaster on Wednesday, September 25, 2019, In : Mineralogy 

Duncan Miller


Reproduced by courtesy of the Natural History Museum of Los Angeles County

Every year, the International Mineralogical Association approves the names of many newly discovered minerals (http://nrmima.nrm.se//recentmin.htm). The requirements are stringent, involving analytical descriptions of both the chemistry and physical structure of any candidate new mineral. Most of these are microscropic and not display-worthy. But every now and then, a new mineral is discovered that not only ...


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Zultanite - A relatively new gemstone from Turkey

Posted by Site Moderator Webmaster on Monday, June 24, 2019, In : Mineralogy 

By Peter Rosewarne

My wife and I recently visited Istanbul for a few days on our way to Venice and beyond. An 11-hour non-stop flight on Turkish Airways from Cape Town International Airport got us there. Impressions of Istanbul were favourable; interesting, friendly, good food, clean and safe. We stayed in the Old City and did a lot of walking and had an obligatory tourist boat ride along the Bosphorus (East meets West). We visited the Grand Bazaar, the largest covered bazaar in the World with...

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Ye Olde English Spar Boxes – a Hobby Revived!

Posted by Site Moderator Webmaster on Monday, June 24, 2019, In : Mineralogy 
Lesley Andrews

During the nineteenth and early twentieth centuries a popular pastime among the mining population of Northern England was the construction of spar boxes. These were used to decorate their homes, and also to sell to make some extra money. Spar boxes were made up of various crystals (spar is the old name for a crystalline mineral) which were collected by the miners working in the lead and iron mines of the north Pennines and Lakeland areas.

My first encounter with spar boxes in 200...


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Phlogging a dead horse?

Posted by Site Moderator Webmaster on Thursday, May 9, 2019, In : Mineralogy 
Jo Wicht

Many of you are aware of my obsession with Blue Lace Agate, both from a lapidary point of view and with stones from the mine, as well as my curiosity as to how the mineral was possibly formed. Any new information that I come across, be it a new specimen or comment, has to be investigated. Recently it was Marco Campos-Venuti’s new book (Banded Agates: a genetic approach (2018) www.agatesandjaspers.com) which set me off on the trail again because it has a chapter on Lace Agates. Marco...


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