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Newest topics and users posts
29 Mar-00:03:53 Identification question (Jim Wilkinson)
28 Mar-23:16:36 Re: collection of volkmar stingl (Volkmar Stingl)
28 Mar-18:25:15 Re: collection of firmo espinar (Firmo Espinar)
28 Mar-09:37:50 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-19:47:08 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Pete Richards)
27 Mar-16:15:44 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-15:18:59 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Alfredo)
27 Mar-14:39:29 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-05:21:48 Re: the mim museum in beirut, lebanon (Mim Museum)
27 Mar-05:03:26 Re: trying to find information on rose/pink quartz and tourmaline associations. (Ning)
27 Mar-02:39:50 Re: the mim museum in beirut, lebanon (Tobi)
27 Mar-00:23:28 Re: collection of volkmar stingl (Volkmar Stingl)
26 Mar-00:53:41 Re: collection of volkmar stingl (Volkmar Stingl)
25 Mar-13:32:10 Re: collection of michael shaw (Michael Shaw)
25 Mar-00:25:58 The mizunaka collection - quartz (Am Mizunaka)
23 Mar-13:35:22 Re: collection of firmo espinar (Firmo Espinar)
22 Mar-08:32:28 Re: collection of michael shaw (Michael Shaw)
22 Mar-04:20:41 Re: the mim museum in beirut, lebanon (Mim Museum)
21 Mar-22:49:19 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:47:40 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:45:25 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-15:34:23 Re: the mizunaka collection - quartz (Am Mizunaka)
21 Mar-14:35:08 Re: jim’s mineral collection (Jim Wilkinson)
21 Mar-14:15:36 The 4th phoenix heritage mineral show (phms) hosted by mineralogical society of arizona (m (Chris Whitney-smith)
21 Mar-04:36:10 Re: the mizunaka collection (Tobi)

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  Topic: Chinese "Hydrozincite" specimens?
Barry Vincent

Replies: 4
Views: 13921

PostForum: Incorrect classification and fakes   Posted: Oct 07, 2015 17:31   Subject: Re: Chinese "Hydrozincite" specimens?
Jordi. Here is a picture of one of those suspicious Chinese 'Hydrozincites' for you to look at.
You can of course delete this image after you have seen it as this is not one of my own photographs as ...
  Topic: Chinese "Hydrozincite" specimens?
Barry Vincent

Replies: 4
Views: 13921

PostForum: Incorrect classification and fakes   Posted: Oct 07, 2015 06:05   Subject: Re: Chinese "Hydrozincite" specimens?
Jordi. Thank you for the quick response to my inquiry. I checked out that link and the consensus there was that it's not Hydrozincite, but either Aragonite or Calcite with perhaps a trace of Hydrozinc ...
  Topic: Chinese "Hydrozincite" specimens?
Barry Vincent

Replies: 4
Views: 13921

PostForum: Incorrect classification and fakes   Posted: Oct 07, 2015 04:36   Subject: Chinese "Hydrozincite" specimens?
During one of my favorite pastimes (surfing Ebay) I came across what is claimed to be Hydrozincite from China. It's one of the missing species in my collection and I'm thinking of buying such a specim ...
  Topic: How to remove iron stains?
Barry Vincent

Replies: 24
Views: 66572

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Nov 16, 2013 00:14   Subject: Re: How to remove iron stains?
Super Iron Out is much safer and just as effective (and maybe more so) as Oxalic acid. One should use the least aggressive cleaner possible when cleaning. Also, I have seen many specimens ruined by ...
  Topic: How to remove iron stains?
Barry Vincent

Replies: 24
Views: 66572

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Nov 15, 2013 23:28   Subject: Re: How to remove iron stains?
Oxalic acid has a high affinity for calcium and will etch most fluorite, dulling the luster. Speaking from experience, I would not recommend using it to clean fluorite (or much of anything else for th ...
  Topic: How to remove iron stains?
Barry Vincent

Replies: 24
Views: 66572

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Nov 15, 2013 17:24   Subject: Re: How to remove iron stains?
Oxalic Acid still hasn't been mentioned yet or am I missing some detail here :)
  Topic: Alternative to Ethyl (Ethanol) for Qualitative Analysis
Barry Vincent

Replies: 4
Views: 8259

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 28, 2013 20:49   Subject: Re: Alternative to Ethyl (Ethanol) for Qualitative Analysis
Thanks for the response Gneiss.
I just looked at the 1lt bottle of Methylated Spirits that I already have and it says
on the label 95 % v/v Ethanol. No dyes have been added as it's clear.
Seems ...
  Topic: Alternative to Ethyl (Ethanol) for Qualitative Analysis
Barry Vincent

Replies: 4
Views: 8259

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 28, 2013 20:19   Subject: Re: Alternative to Ethyl (Ethanol) for Qualitative Analysis
I've not actually done this procedure so I don't know for certain, but I would think that ordinary "denatured alcohol" (impure ethanol, sold as alcohol stove fuel) would work equally well. ...
  Topic: Alternative to Ethyl (Ethanol) for Qualitative Analysis
Barry Vincent

Replies: 4
Views: 8259

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 28, 2013 17:14   Subject: Alternative to Ethyl (Ethanol) for Qualitative Analysis
I'm getting together a selection of reagents ect (as listed in Pough's Field Guide) so as to try my hand at Blowpipe Analysis.
However I've come up against a problem of obtaining Ethyl Alcohol (Etha ...
  Topic: How to remove iron stains?
Barry Vincent

Replies: 24
Views: 66572

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 07, 2013 17:34   Subject: Re: How to remove iron stains?
Oxalic Acid hasn't been mentioned here yet. I use it now and again and have had no problems as yet.
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 20, 2013 11:19   Subject: Re: Dana's Textbook of Mineralogy
Hi John, yes I also contacted Easton Press and they informed me that the Paterson estate voided their contract.
Thanks for trying to help.
Barry
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 20, 2013 02:33   Subject: Re: Dana's Textbook of Mineralogy
Thanks for this Tom , John, I'll follow through with that information
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 17, 2013 07:16   Subject: Re: Dana's Textbook of Mineralogy
John, thanks for the information about the special edition of
Pough's Field Guide to Rocks & Minerals.
I"ve searched the internet and I haven't been able to see anyone
actually listing t ...
  Topic: Tarnished Cuprite
Barry Vincent

Replies: 0
Views: 5220

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Jun 09, 2013 08:37   Subject: Tarnished Cuprite
Is there a non destructive way of cleaning (brightening up ) tarnished Cuprite
I have a large (hand size) ore specimen which is a mass of tiny Cuprite crystals.
The whole specimen is very tarnished ...
  Topic: Mind Game
Barry Vincent

Replies: 0
Views: 6932

PostForum: Off-Topic and Introductions   Posted: Jun 08, 2013 17:12   Subject: Mind Game
Since I recently joined this forum I've been enjoying the wonderful photographs in the Museum threads. Some of the mineral specimens in these museums are gigantic, even monstrous and quite often it is ...
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 07, 2013 15:24   Subject: Re: Dana's Textbook of Mineralogy
Thank you Pete for your response.
So this is an error.
So it's not a case of 'read between the lines' but
'read the dashes'.
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 06, 2013 22:12   Subject: Re: Dana's Textbook of Mineralogy
Oh yes, I want. !
Thanks for that information John.
  Topic: Presentation of new members - Reference Thread
Barry Vincent

Replies: 501
Views: 556825

PostForum: Off-Topic and Introductions   Posted: Jun 06, 2013 17:02   Subject: Re: Presentation of new members - New member from 'Down Under'
Hello Crocoite. No I will not be at the seminar in Sydney even though I only live 2 (3) hours train journey north between Newcastle and Maitland.
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 06, 2013 16:57   Subject: Re: Dana's Textbook of Mineralogy
Tom , NSW is New South Wales, Australia.
But thanks for the offer anyway, that is very sporting of you.
I'll look for the 4th edition that John has mentioned.
  Topic: Dana's Textbook of Mineralogy
Barry Vincent

Replies: 20
Views: 34497

PostForum: Mineralogical Literature   Posted: Jun 06, 2013 12:35   Subject: Re: Dana's Textbook of Mineralogy
Hi Tom, Thanks for the information. I think that clears up the mystery. There has never been a 5th edition of Dana's Textbook of Mineralogy.
I have the 5th edition (1995) of Pough's Field Guide and ...
 
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