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Techniques for CollectorsProgram at the Winter Micromount Gathering

12th Feb 2010 16:31 UTCHenry Barwood

I'm going to be discussing the Arkansas syenites and revising the mineral lists for each quarry. Since so many of the attendees have visited the locations, we hope to hammer out a draft of a comprehensive catalog of the species by quarry (and rock type?) that will eventually be fleshed out with images and analyses.

Anyone planning on attending who has material or images from the locations is encouraged to attend and bring your mounts.

12th Feb 2010 17:58 UTCDenise Bicknell

Cool! Wish I could go. I've gotten quite a few specimens from both Art Smith and AL Kidwell. That would be loads of fun...

12th Feb 2010 18:31 UTCHenry Barwood

Hi Denise,

You should consider coming over next year. It really is a great meeting. Very relaxed and informal, but lots of exchange of information (and specimens!).

12th Feb 2010 19:46 UTCPeter Andresen Expert

Hi Henry,

It sounds like a great gathering! We have a small gathering, and last year it was the only one here in Norway. This years gathering will start tomorrow, but there is already plans for one more, arranged by Tomas Husdal, in the Tysfjord area (collecting and gettingtogether gathering). The one tomorrow is just a bring your scope, some swapping stuff, some bragging stuff, some unidentified stuff and a lot of good mood.

Right now I'm sitting and picking out some behoites to swap/give away, and was thinking... what if we sent over some of our stuff to your gathering, and got some back? For next year? The meeting tomorrow are in Porsgrunn, not far from Sagåsen quarry, and the other quarries inside the Larvikite plutonic complex, also alkaline lockalities. I can only speak for my self, but I got plenty of material that I could send, like a lot of material rich in chiavennite and epididymite...

A little hi to you too, Denise! The Arkansas samples you sent me last time, are all happily in my collection :) Looking forward for more trades!

Regards Peter

PS: Henry, I saw your response to Roy Wood about pethrographic samples. He already got my Fen complex suit, with melteigite, søvite, fenite, etc... If you are interested in carbonatites and hyperalkali rocks, I still got some to swap, and do recive micro minerals in return ;-)

12th Feb 2010 20:22 UTCHenry Barwood

Hi Peter,

Would love to help you with an exchange. I always bring unsearched specimens of pegmatite to the Winter Gathering. We have a lot of fun breaking it down, and I always learn something new by seeing what everyone finds. I have a 30 year accumulation of specimens from Arkansas that really need work. I'm in the process of cleaning out storage areas with the idea that I will sort everything out. I would be happy to send you some of the "give away" specimens that several people have already asked about. Let me know when your meeting is, and I will gather a set of specimens for your group and then you can do the same for our group. Who knows, it might catch on with other meetings as well.

I can certainly supply vuggy pegmatite from Jones Mill Quarry (burbankite and many other minerals), 3M Quarry (kuptletskite, lavenite, pyrophanite, etc.) and Granite Mountain No. 1 (zeolites, notably nice orange stilbites, along with other things - we found some helvite the last trip).

Here are some images from the Jones Mill Quarry pegmatites:

http://spectrum.troy.edu/~barwood/Jones%20Mill%20Thumbnails.htm

http://spectrum.troy.edu/~barwood/Images101204.htm

I do a lot of cathodoluminescence imaging and spectroscopy on petrographic specimens and I'm always looking for samples of fenites and other alkalic rocks to study. I hope to have a new imaging spectrograph finished soon that I can use to study very low intensity emissions from 400-1000+ nm. Here is a PowerPoint presentation of some preliminary work on feldspars:

http://spectrum.troy.edu/~barwood/Feldspar%20NIRCL.ppt

Henry

12th Feb 2010 21:34 UTCDenise Bicknell

I would love to attend a Micromount gathering someday Henry, just have to have the right timing.

Hi Peter! I've been re-wroking my catalog and need some help on a speicmen I obtained from you. Its a Levyne-(?) -transparent colorless tabular crystals -but I've no locality other than Norway. Could you make a guess as to a possible locality? It was from 2005. I realize it may be impossible to even guess but if I don't ask...

Denise

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