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Newest topics and users posts
13 Jan-16:19:18 Re: libyan desert glass structure (Alfredo)
13 Jan-15:52:57 Re: libyan desert glass structure (Craig Hagstrom)
13 Jan-15:39:15 Re: libyan desert glass structure (Alfredo)
13 Jan-15:09:42 Re: libyan desert glass structure (Craig Hagstrom)
13 Jan-15:06:48 Re: the mizunaka collection - beryl (Am Mizunaka)
13 Jan-15:00:30 Re: cleaning a hematite rose (Alfredo)
13 Jan-14:37:56 Cleaning a hematite rose (Robson Vieira)
13 Jan-14:21:44 Re: the mizunaka collection (Volkmar Stingl)
13 Jan-12:23:30 Re: collection of michael shaw (Michael Shaw)
13 Jan-08:16:36 Re: libyan desert glass structure (Marco Campos-venuti)
13 Jan-05:46:51 The mizunaka collection - beryl (Am Mizunaka)
13 Jan-01:10:29 Re: libyan desert glass structure (Roger Warin)
12 Jan-13:10:54 Re: libyan desert glass structure (Craig Hagstrom)
12 Jan-11:46:28 Re: labeled on back as "england" but not sure locality or even if england at all (Caf2_4_me)
12 Jan-11:09:56 Re: libyan desert glass structure (Craig Hagstrom)
12 Jan-09:25:54 Re: labeled on back as "england" but not sure locality or even if england at all (Juan Roberto Rivera)
12 Jan-07:54:11 Re: libyan desert glass structure (Peter Lemkin)
12 Jan-01:28:55 Re: collection of volkmar stingl (Volkmar Stingl)
11 Jan-20:02:46 Re: libyan desert glass structure (Craig Hagstrom)
11 Jan-19:45:05 Re: libyan desert glass structure (Alfredo)
11 Jan-19:32:52 Re: collection of michael shaw (Michael Shaw)
11 Jan-14:58:09 Re: libyan desert glass structure (Roger Warin)
11 Jan-11:01:00 Libyan desert glass structure (Craig Hagstrom)
11 Jan-04:41:16 The mizunaka collection - quartz (Am Mizunaka)
10 Jan-18:24:00 Re: presentation of new members - reference thread (Craig Hagstrom)

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  Topic: What is it???
John S. White

Replies: 4
Views: 820

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Nov 18, 2024 14:06   Subject: Re: What is it???
Epidote
  Topic: Verdelite & Quartz ?
John S. White

Replies: 6
Views: 1854

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Sep 24, 2024 14:56   Subject: Re: Verdelite & Quartz ?
Sure looks like tourmaline to me. Hollow tourmalines are common so quartz-filled tourmalines are known.
  Topic: Photos of our collections - the whole collections, not only single pieces ;-)
John S. White

Replies: 10
Views: 3349

PostForum: Off-Topic and Introductions   Posted: Aug 26, 2024 09:38   Subject: Re: Photos of our collections - the whole collections, not only single pieces ;-)
It warms my heart to see so many specimen drawers and specimen flats. I wish I could attach my article from Rocks & Minerals "To Have and to Hold" but the system prevents it. My articl ...
  Topic: Iron cross twinned Pyrites from Gachalá or from Ubalá?
John S. White

Replies: 10
Views: 7678

PostForum: What is it? - Where is it from?   Posted: Jan 01, 2024 11:56   Subject: Re: Iron cross twinned Pyrites from Gachalá or from Ubalá?
These twins are remarkable, in part for their consistent perfection and also for their great abundance. I am not aware of any other occurrence that even begins to match this one. I was fortunate to ...
  Topic: Best wishes / 2023-2024!
John S. White

Replies: 16
Views: 13880

PostForum: Comments & Suggestions   Posted: Dec 24, 2023 11:51   Subject: Re: Best wishes / 2023-2024!
Ditto to all of the above!

John White
  Topic: Barcelona Museum - Folch collection
John S. White

Replies: 10
Views: 23386

PostForum: The Folch Collection   Posted: Nov 29, 2023 14:05   Subject: Re: Barcelona Museum - Folch collection
I believe that the Folch mineral collection has not been sold. And I might add that Folch's daughter had a collection of antique musical instruments. A family of collectors!
  Topic: Curating your collection
John S. White

Replies: 11
Views: 62617

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Nov 18, 2023 11:01   Subject: Re: Curating your collection
Well stated Roger. The only consideration with donating a mineral collection to a museum is attempting to gain assurance that the museum is worthy of receiving the collection. Is the museum currently ...
  Topic: Who is coming to Mineralientage?
John S. White

Replies: 20
Views: 26388

PostForum: Mineral Shows   Posted: Sep 24, 2023 11:04   Subject: Re: Who is coming to Mineralientage?
Sorry I can't offer any advice except that the Italian restaurants near the Bonhof are not your best bet. Try Googling Italian restaurants with truffle dishes.
  Topic: Who is coming to Mineralientage?
John S. White

Replies: 20
Views: 26388

PostForum: Mineral Shows   Posted: Sep 16, 2023 10:27   Subject: Re: Who is coming to Mineralientage?
Well, I must say thank you very much Roger for the photos. I recall meeting you and posing with you. And I love the wonderful photo of Alfredo and Jordi. We will miss Jordi terribly, And, of course, ...
  Topic: Who is coming to Mineralientage?
John S. White

Replies: 20
Views: 26388

PostForum: Mineral Shows   Posted: Sep 15, 2023 09:44   Subject: Re: Who is coming to Mineralientage?
Hi James:

Sorry I came down on you hard. I completely misread the tone of your message.

John
  Topic: Who is coming to Mineralientage?
John S. White

Replies: 20
Views: 26388

PostForum: Mineral Shows   Posted: Sep 15, 2023 05:51   Subject: Re: Who is coming to Mineralientage?
I am very surprised at James's comment. He makes it sound as though he feels it isn't worth going to. How sad. The Munich Show is by far the most extraordinary mineral exposition one can imagine. ...
  Topic: Inclusions of spiral or helical growth and screw dislocations - (0)
John S. White

Replies: 49
Views: 157074

PostForum: Featured Columns of FMF   Posted: Jul 04, 2023 09:00   Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0)
I should say that the inclusions in beryl photo I posted seem to be atypical. Those in a topaz from Mason County, Texas, are far more typical. See attached photo.
  Topic: Inclusions of spiral or helical growth and screw dislocations - (0)
John S. White

Replies: 49
Views: 157074

PostForum: Featured Columns of FMF   Posted: Jul 04, 2023 08:52   Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0)
I no longer have my collection of crystals with spiral inclusions but it consisted of three beryls, six spodumenes and seven topazes. Under high magnification one can see that at least one of them, a ...
  Topic: Inclusions of spiral or helical growth and screw dislocations - (0)
John S. White

Replies: 49
Views: 157074

PostForum: Featured Columns of FMF   Posted: Jul 03, 2023 05:44   Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0)
I must take issue with two comments by Mr. Carnein in his post with the photos of a topaz crystal with helical inclusions. I do not believe the inclusions are "fractures." Instead I believ ...
  Topic: About the tourmaline twin
John S. White

Replies: 6
Views: 9200

PostForum: Minerals and Mineralogy   Posted: Jan 07, 2023 07:18   Subject: Re: About the tourmaline twin
I see no reason to suggest that the pair of crystals in the photo are twinned. In fact I do not believe that tourmaline is known to twin.
 
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