FMF - Friends of Minerals Forum, discussion and message board

[Topher]

I have found a few that look just like the natrolite picture but it's hard to get them home with out breaking them work kinda frowns on us when we take things home I want to upload some pics of some of mine but my only Internet is my phone and it won't let me upload from it

[vic rzonca]

Goethite after pyrite

[Jordi Fabre]

One more for Utah

[John Medici]

A couple of Dugway, Utah (Juab County) geodes. The locality is somewhat in the "outback", and was open a couple of years ago. If one stays until darkness with a UV light, many green-fluorescing (SW) geode pieces can be found. Generally, the chalcedony ones fluoresce best (from slight uranium content I understand). I'll also add an odd pseudo from the Thomas range mountains (near Dugway).

[Tobi]

The wonderful Thomas Range topaz:

[Tobi]

Two specimens from Utah that once were in my collection:

[Bob Harman]

Expounding on John Medici's previous postings of Dugway Utah quartz geodes, this is my 2015 Cincinnati Mineral Show display case of these. Other than quartz, not much in the way of secondary minerals is found in these geodes.

[Pierre Joubert]

Fantastic display Bob! The agate looks to me like blue lace agate. Is there a similarity?

[Bob Harman]

Thanks for your kind words Pierre !

As to any similarity to blue lace agate, I think it only coincidentally similar in color and banding forms. None of the natural blue lace agate that I am familiar with (and it is not much!) comes from Dugway in Utah.....that is, unless someone who knows more than I has different thoughts. BOB

[Bob Harman]

Acquired at the just ended 2016 Denver show along with a couple of additional examples, these celestine and calcite geodes come from Emery County Utah. There was a recent article on mining them by Daniel E Kile et al in Rocks & Minerals vol 90 #4 (July- August 2015). I acquired them from the booth of one of the miners.