Mindat Mineralogy Messageboard http://www.mindat.org/forum.php Thu, 20 Jun 2013 09:16:56 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,11,296822,296961#msg-296961 Re: Help identifying 10 specimens http://www.mindat.org/forum.php?read,11,296822,296961#msg-296961
Stephanie - yes number 10 is definately completely transparent, apart from the iridescance on some of the surfaces


Thanks again everyone!
Vicky]]> vickymacalla Identity Help Thu, 20 Jun 2013 08:55:10 +0000 http://www.mindat.org/forum.php?read,6,296934,296960#msg-296960 Re: Minerals from New Zealand http://www.mindat.org/forum.php?read,6,296934,296960#msg-296960
This is an interesting question, I am a New Zealander who has been collecting minerals for 28 years and I see relatively few New Zealand minerals for sale at either rock shops or at shows, unless it is quartz from the Coromandel Peninsula or sulfur from Rotorua. There is a wealth of New Zealand lapidary material available as lapidary seems to be a major focus for the New Zealand clubs. Perhaps one of the best sources for New Zealand minerals are the national shows, this year the New Zealand National Rock and Mineral Show is in New Plymouth (October 4-6th) if you are keen to “jump across the ditch”.

I realize that Mindat is not a sales forum and at the risk of getting in a bit of trouble on my first posting, I want to make a few suggestions as to who may be able to help you.

Three people that I suggest you contact are Colin at Rotorua Lapidary (rotorualapidary.co.nz), Dave at Rough Country Minerals (roughcountryminerals.com) and Leno at Crystal Mountain (crystalmountain.co.nz). Even if they don’t have what you are looking for they may know of someone who does. Unfortunately, Wilderness Gems in Ngatea closed down a few years ago and they had an extensive and varied collection of New Zealand minerals at one stage. Perhaps another option is to contact the rock clubs and see if anyone is selling a collection, is there anything in particular that you are looking for? Hopefully other people can provide further suggestions.

The internet is a very useful source for rare New Zealand minerals, as an example of what is available; there is currently a micromount of cavansite/okenite from Aranga Quarry and a piece of tuhualite from Mayor Island.

John, if you asked me the two best areas for mineral collecting in New Zealand, I would say the Coromandel Peninsula and the Nelson area.

I hope that this is of some use to you.

Cheers
Hamish
(Auckland, New Zealand)]]> Hamish Sutherland General Thu, 20 Jun 2013 08:50:48 +0000 http://www.mindat.org/forum.php?read,19,296891,296959#msg-296959 Re: does super iron out hurt siderite? http://www.mindat.org/forum.php?read,19,296891,296959#msg-296959 Rock Currier Mineral Cleaning and Preparation Thu, 20 Jun 2013 08:04:52 +0000 http://www.mindat.org/forum.php?read,11,296939,296958#msg-296958 Re: Inherited rock collection identification http://www.mindat.org/forum.php?read,11,296939,296958#msg-296958 Rock Currier Identity Help Thu, 20 Jun 2013 08:01:28 +0000 http://www.mindat.org/forum.php?read,106,194211,296957#msg-296957 Sivec marble http://www.mindat.org/forum.php?read,106,194211,296957#msg-296957
I am Mr.Danail from Prilep,Macedonia.
I have small production company for Sivec marble in Prilep 15km. from quary of Sivec marble.
If you are steel interested in please be free to contact us,
I think that we will made ling term of cooperation with you

Best regards
Danail
tel.++389 75 566 575
mail addr; ponte2lmk@gmail.com]]> Danail Belakaposki Photos Thu, 20 Jun 2013 07:19:20 +0000 http://www.mindat.org/forum.php?read,6,296934,296956#msg-296956 Re: Minerals from New Zealand http://www.mindat.org/forum.php?read,6,296934,296956#msg-296956
I lived in New Zealand until I finished University but didn't get the mineral bug until many years later when I was living in Broken Hill NSW Australia. Field collecting is always an option but at my time of life I much prefer the relative luxury of swop and/or buy.

I guess I will keep on searching.

Cheers
Keven]]> Keven Semple General Thu, 20 Jun 2013 07:13:18 +0000 http://www.mindat.org/forum.php?read,11,296939,296955#msg-296955 Re: Inherited rock collection identification http://www.mindat.org/forum.php?read,11,296939,296955#msg-296955
I am interested in taking a look at your collection. I can help inform you about exactly what you need to do in terms of labeling, archival/preservation, and cleaning if needed. Please contact me and we can discuss this further. Rare minerals moreso than agates are my specialty but I really think it looks like your uncle had a great eye for fine specimens!

Regards,

Jeremy]]> Jeremy A. Zolan Identity Help Thu, 20 Jun 2013 05:30:20 +0000 http://www.mindat.org/forum.php?read,55,219350,296954#msg-296954 Re: Moldavite real or fake? http://www.mindat.org/forum.php?read,55,219350,296954#msg-296954 reoki081 Fakes, Frauds and Marketing Ploys Thu, 20 Jun 2013 05:27:57 +0000 http://www.mindat.org/forum.php?read,106,280813,296953#msg-296953 Re: Amethyst - Route 11 road cuts, Salem, New London Co., Connecticut, USA http://www.mindat.org/forum.php?read,106,280813,296953#msg-296953 Jeremy A. Zolan Photos Thu, 20 Jun 2013 05:26:00 +0000 http://www.mindat.org/forum.php?read,55,187540,296952#msg-296952 Re: FULGURITE OR NOT http://www.mindat.org/forum.php?read,55,187540,296952#msg-296952 reoki Fakes, Frauds and Marketing Ploys Thu, 20 Jun 2013 05:24:55 +0000 http://www.mindat.org/forum.php?read,6,296869,296951#msg-296951 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296951#msg-296951
I posted this to confirm my assumptions in regards to these states. Tennessee does seem to have a lot of potential but it is quite rugged. I believe that it may produce specimens similar to those found in the Smoky Mountains of North Carolina if someone was avid about doing some adventurous prospecting. I also would imagine there could be nice Cu/Pb secondaries to be found there. I imagine many of the oxide zones of metalliferous deposits have not yet been scraped off by man, and certainly not by glaciers unlike many of our former metallic-type mines here in New England.

As for West Virginia, I think coal mines could hold some potential for rare minerals such as sulfates, uranyl/vanadium minerals, and perhaps organic phases. The sulfur in the coal can definitely help concentrate certain metals and the carbon content could help reduce solvated metals (in a fashion siliar to a rollfront deposit) which would then be subsequently oxidized to form low temperature secondary phases . I am sure there are also some vuggy limestones and dolostones to be found yielding good calcites and such. Not terribly exciting stuff in my opinion, but fun collecting. I have even seen a few herkimer diamond like quartzes from West Virginia. they weren't of the same quality as the NY material, but pretty nice.

Someone ought to go out there and poke around. Perhaps I will get to it someday since I have lately been more interested in discovering new localities than rediscovering old ones.]]> Jeremy A. Zolan General Thu, 20 Jun 2013 05:18:47 +0000 http://www.mindat.org/forum.php?read,11,296928,296950#msg-296950 Re: Hemimorphite with Hydrozincite? http://www.mindat.org/forum.php?read,11,296928,296950#msg-296950
Are you sure it is hemimorphite? I've seen very similar material from the Potosi mine in
the Santa Eulalia district of Mexico that is actually willemite. Is it a very small specimen
and do have locality information for the piece? The willemite that I've seen is present as
thin crystalline crusts (usually not more than 4-5mm thick) on earthy to hard dark goethite
matrix. It is often mistaken for hemimorphite and is sometimes found in hemimorphite lots
when brought into the US by importers. Oftentimes, hemimorphite is associated as the more
typical bladed crystals.]]> Dana Slaughter Identity Help Thu, 20 Jun 2013 04:14:03 +0000 http://www.mindat.org/forum.php?read,6,296869,296949#msg-296949 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296949#msg-296949 Sorry, but I do not care for nor recommend the use of Mr. Ransom's publication, and I don't consider it a "serious" reference book. I know for my own home state, it is simply riddled with errors and erroneous reports. I have had to "clean up the mess" after someone came through and added entries to our database based only on what was noted in that publication. It would seem that these many reports collected were rarely if ever "fact checked", rather simply repeating older, since corrected errors. For some of his errors, I am actually at a loss as to where these occurrences were ever noted. (?)

MRH]]> Mark Heintzelman General Thu, 20 Jun 2013 04:02:48 +0000 http://www.mindat.org/forum.php?read,11,296928,296948#msg-296948 Re: Hemimorphite with Hydrozincite? http://www.mindat.org/forum.php?read,11,296928,296948#msg-296948 Doug Daniels Identity Help Thu, 20 Jun 2013 03:15:16 +0000 http://www.mindat.org/forum.php?read,6,296869,296947#msg-296947 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296947#msg-296947 Doug Daniels General Thu, 20 Jun 2013 03:12:51 +0000 http://www.mindat.org/forum.php?read,6,296946,296946#msg-296946 cerite from Jamestown Colorado? http://www.mindat.org/forum.php?read,6,296946,296946#msg-296946 Matt Neuzil General Thu, 20 Jun 2013 03:04:22 +0000 http://www.mindat.org/forum.php?read,6,296869,296945#msg-296945 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296945#msg-296945
As mentioned prior, coal fields are not good environments for a vast array of mineral occurrences. Take my own home state of Pennsylvania. Were you to cut the state in half, east and west, West Pennsylvania would fair little better than West Virginia does as far as mineral occurrences. Being mostly coal deposits and "brown hematite" iron ores, it's a real mineralogical "snore-fest' out that way.

Tennessee geology is rugged and riddled with river valleys, so it was still a pretty underdeveloped "frontier type" state back in the "pick and shovel" days of early mining in America. Consider that many of the deposits exploited here on the east coast would not have been considered quite so "economical" with the cost factors of more modern times. So as stated, there may be many such minor, albeit wonderful occurrences that have not and may never come to light. :(


MRH]]> Mark Heintzelman General Thu, 20 Jun 2013 03:01:38 +0000 http://www.mindat.org/forum.php?read,106,280813,296944#msg-296944 Re: Amethyst - Route 11 road cuts, Salem, New London Co., Connecticut, USA http://www.mindat.org/forum.php?read,106,280813,296944#msg-296944 I'm game for a group trip...

Mike]]> Mike Polletta Photos Thu, 20 Jun 2013 02:51:34 +0000 http://www.mindat.org/forum.php?read,6,296934,296943#msg-296943 Re: Minerals from New Zealand http://www.mindat.org/forum.php?read,6,296934,296943#msg-296943 I do occasionally receive nice specimens, but only from old collections. Probably a good place for a field collector to spend some time.
Dave]]> David Garske General Thu, 20 Jun 2013 02:33:30 +0000 http://www.mindat.org/forum.php?read,106,212959,296942#msg-296942 Re: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada http://www.mindat.org/forum.php?read,106,212959,296942#msg-296942 Fred A. Schuster Photos Thu, 20 Jun 2013 02:31:48 +0000 http://www.mindat.org/forum.php?read,6,296934,296941#msg-296941 Re: Minerals from New Zealand http://www.mindat.org/forum.php?read,6,296934,296941#msg-296941 John Stolz General Thu, 20 Jun 2013 01:53:23 +0000 http://www.mindat.org/forum.php?read,11,296928,296940#msg-296940 Re: Hemimorphite with Hydrozincite? http://www.mindat.org/forum.php?read,11,296928,296940#msg-296940 Thank you all.
Dan]]> Dan Costian Identity Help Thu, 20 Jun 2013 01:45:28 +0000 http://www.mindat.org/forum.php?read,11,296939,296939#msg-296939 Inherited rock collection identification http://www.mindat.org/forum.php?read,11,296939,296939#msg-296939
I am thankful for any knowledge you have to share,
-Nik

Pictures:






]]> Nik Madsen Identity Help Thu, 20 Jun 2013 01:41:30 +0000 http://www.mindat.org/forum.php?read,6,296869,296938#msg-296938 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296938#msg-296938 Henry Barwood General Thu, 20 Jun 2013 01:16:24 +0000 http://www.mindat.org/forum.php?read,13,296506,296937#msg-296937 Re: Given Zerene Stacker a go... http://www.mindat.org/forum.php?read,13,296506,296937#msg-296937
JPEG files store achromatic information in 8 bits only. The chromatic information is stored in 4 bits, i.e., Yellow-Blue and Magenta-Green channels only have 16 levels of chromatic value. The only thing they are good for is large compression values in final form.

Ron]]> Ronald J. Pellar Mineral Photography Thu, 20 Jun 2013 00:39:43 +0000 http://www.mindat.org/forum.php?read,15,296642,296936#msg-296936 Re: What is term for this type of crystal growth? Interlocking Quartz Points http://www.mindat.org/forum.php?read,15,296642,296936#msg-296936 Ronald J. Pellar Rockhounds Thu, 20 Jun 2013 00:23:35 +0000 http://www.mindat.org/forum.php?read,6,296869,296935#msg-296935 Re: What's the Deal with Tennessee and West Virginia?! http://www.mindat.org/forum.php?read,6,296869,296935#msg-296935 Jim Sullivan General Thu, 20 Jun 2013 00:19:12 +0000 http://www.mindat.org/forum.php?read,6,296934,296934#msg-296934 Minerals from New Zealand http://www.mindat.org/forum.php?read,6,296934,296934#msg-296934
Can anyone provide me with some assistance here?

Keven]]> Keven Semple General Thu, 20 Jun 2013 00:12:32 +0000 http://www.mindat.org/forum.php?read,11,296928,296933#msg-296933 Re: Hemimorphite with Hydrozincite? http://www.mindat.org/forum.php?read,11,296928,296933#msg-296933
Those are calcites, as the xl form is very common for that species; put a small drop of acid on one of the outer pieces - it'll fizz like crazy. Don's suggestion of SWUV is also good; it's a non-destructive test. From the looks of things, it looks like that piece was hit with acid, naturally or to quick-clean iron staining off, from seeing those xls; a quick dip does that & the hemimorphite, being slower reacting to acids, are hardly touched, while the calcites get rounded a bit. As mentioned, this happens from acid ground waters, quite frequently, naturally.

Your friend, Steve]]> steven garza Identity Help Wed, 19 Jun 2013 23:55:59 +0000 http://www.mindat.org/forum.php?read,11,296928,296932#msg-296932 Re: Hemimorphite with Hydrozincite? http://www.mindat.org/forum.php?read,11,296928,296932#msg-296932 Reiner Mielke Identity Help Wed, 19 Jun 2013 23:50:23 +0000