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Newest topics and users posts
19 Sep-12:29:13 Re: royal cornwall museum mineral gallery - your support is needed (Robert Seitz)
19 Sep-05:27:22 Re: franjungle collection (Franjungle)
18 Sep-15:30:45 Re: unidentified vitreous stone (Joie Geurts)
18 Sep-14:24:19 Re: unidentified vitreous stone (Lluis)
18 Sep-14:09:17 Re: beautiful flat crystals - what is this?? (Lluis)
18 Sep-13:24:12 Re: unidentified vitreous stone (Joie Geurts)
18 Sep-13:08:50 Re: beautiful flat crystals - what is this?? (Carles Millan)
18 Sep-12:31:04 Re: collection of michael shaw (Crosstimber)
18 Sep-11:15:50 Re: the mizunaka collection (Am Mizunaka)
18 Sep-10:45:53 Re: unidentified vitreous stone (Josele)
18 Sep-10:34:21 Re: unidentified vitreous stone (Vinoterapia)
18 Sep-10:15:15 Re: unidentified vitreous stone (Joie Geurts)
18 Sep-09:34:26 Re: the mizunaka collection (Crosstimber)
18 Sep-08:51:35 Re: unidentified vitreous stone (Vinoterapia)
18 Sep-07:08:46 Re: unidentified vitreous stone (Josele)
18 Sep-06:43:41 Re: unidentified vitreous stone (Joie Geurts)
18 Sep-06:10:27 Re: unidentified vitreous stone (Volkmar Stingl)
18 Sep-05:14:36 Re: the mizunaka collection (Pierre Joubert)
18 Sep-05:11:55 Re: unidentified vitreous stone (Joie Geurts)
18 Sep-02:24:48 The mizunaka collection - fluorite (Am Mizunaka)
18 Sep-02:21:38 Re: royal cornwall museum mineral gallery - your support is needed (Robert Seitz)
17 Sep-20:03:34 Re: unidentified vitreous stone (Josele)
17 Sep-12:37:24 Unidentified vitreous stone (Joie Geurts)
17 Sep-05:00:27 Re: collection of heimo hellwig (Heimo Hellwig)
17 Sep-03:04:58 Re: possible slag (Jessieg)

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Author Message
  Topic: Cause of Blue, Green and Blue/Green Coloration of Cookeite
daviddillman

Replies: 4
Views: 2597

PostForum: Minerals and Mineralogy   Posted: May 03, 2017 09:12   Subject: Re: Cause of Blue, Green and Blue/Green Coloration of Cookeite
Thanks for the correction Alfredo. I was going by the ID associated with an image I had seen on FMF.
  Topic: Cause of Blue, Green and Blue/Green Coloration of Cookeite
daviddillman

Replies: 4
Views: 2597

PostForum: Minerals and Mineralogy   Posted: Apr 28, 2017 08:16   Subject: Cause of Blue, Green and Blue/Green Coloration of Cookeite
Is there any analytical work that explains the occasional blue, green, or blue/green coloration of cookeite? More specifically the blue and green cookeite found at this locality:
Stand-on-Your-Head ...
  Topic: Favourite Beryls?
daviddillman

Replies: 15
Views: 8759

PostForum: Favourite Minerals   Posted: Jan 08, 2017 17:23   Subject: Re: Favourite Beryls?
How rare are emerald/aquamarines from Pakistan? Looks very unusual.
  Topic: Don Lum Collection
daviddillman

Replies: 1184
Views: 839124

PostForum: Collection photos and Collector's page   Posted: Jan 03, 2017 23:13   Subject: Re: Don Lum Collection
Whoops, I replied under the image of the wrong specimen. :( Good catch.
  Topic: Don Lum Collection
daviddillman

Replies: 1184
Views: 839124

PostForum: Collection photos and Collector's page   Posted: Jan 03, 2017 21:49   Subject: Re: Don Lum Collection
Is the mineral on the top termination mica or rutile?
  Topic: Unreliable Water Guns?
daviddillman

Replies: 12
Views: 6847

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 29, 2016 21:06   Subject: Re: Unreliable Water Guns?
Thanks to everyone who has replied.

I have not been using distilled tap water so I think I will start doing that and then not use the gun for long periods of time. In the past I have not used the ...
  Topic: Unreliable Water Guns?
daviddillman

Replies: 12
Views: 6847

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 28, 2016 17:16   Subject: Re: Unreliable Water Guns?
Thanks. Now that I think about it I have let the gun get warm and used it for about an hour straight.
  Topic: Unreliable Water Guns?
daviddillman

Replies: 12
Views: 6847

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 28, 2016 15:27   Subject: Unreliable Water Guns?
Hello everyone. I have owned two water guns. I used the first water gun for about 30 hours of operation and it just stopped working. The water gun made the usual noise but no water would come out ...
  Topic: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
daviddillman

Replies: 13
Views: 10151

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: May 10, 2015 12:50   Subject: Re: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
Thanks, the gold is growing on me. I have another one that is all black so I thought there was something wrong with this one. Now I realize they are both good.
  Topic: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
daviddillman

Replies: 13
Views: 10151

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: May 10, 2015 11:50   Subject: Re: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
These pictures are not very good, but the color and luster are true. I decided to included two pictures because the the problems I had with the focus on the different parts of the specimen.
  Topic: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
daviddillman

Replies: 13
Views: 10151

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: May 09, 2015 17:28   Subject: Cleaning "Rusty" spots off Goethite With Otherwise Good Luster
I have several goethites from the Crystal Peak area of Colorado. Overall they have a good, metallic luster and look very black. However there are some spots I would describe as rusty looking or almo ...
  Topic: Storage of Krohnkite ?
daviddillman

Replies: 5
Views: 5235

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: May 09, 2015 16:16   Subject: Storage of Krohnkite ?
I understand Krohnkite is easily dissolved by water. Does this mean it should be stored in an air-tight container? I live in a area (north Texas) where the humidity would be best described as aver ...
  Topic: Attaching Thumbnails - Choice of glue
daviddillman

Replies: 1
Views: 2710

PostForum: Off-Topic and Introductions   Posted: May 07, 2015 02:49   Subject: Attaching Thumbnails - Choice of glue
What is the best type of glue to use for attaching a thumbnail mineral specimen to the foam liner at the bottom of a perky box? Is mineral tack preferred by some? Thanks.
  Topic: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite
daviddillman

Replies: 5
Views: 5149

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Apr 22, 2015 09:33   Subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite
Jordi, Alfredo, Pete,

Thanks for you advice. I will leave it alone.

David
  Topic: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite
daviddillman

Replies: 5
Views: 5149

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Apr 21, 2015 19:36   Subject: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite
I have a specimen from Blanchard New Mexico that contains fluorite, a little Baryte and some circular areas of what appear to be malachite. There are also some iron stains. How can I get the iron st ...
  Topic: Munich Show (Mineralientage) 2014
daviddillman

Replies: 80
Views: 95350

PostForum: News about shows   Posted: Nov 06, 2014 23:05   Subject: Re: Munich Show (Mineralientage) 2014
Did anyone get photos of the ". . . new blue Albites with Microcline and smoky Quartz from somewhere in China.." that Jordi mentioned. I did not see any in the thread. Thanks.
  Topic: Any Tips for Collecting in Green Ridge Pegmatite Area, Grand Co. Colorado?
daviddillman

Replies: 2
Views: 3261

PostForum: Mines and Mineral Localities   Posted: Jun 07, 2014 19:06   Subject: Re: Any Tips for Collecting in Green Ridge Pegmatite Area, Grand Co. Colorado?
Mark,

Thanks for the info.

David
  Topic: Any Tips for Collecting in Green Ridge Pegmatite Area, Grand Co. Colorado?
daviddillman

Replies: 2
Views: 3261

PostForum: Mines and Mineral Localities   Posted: Jun 02, 2014 21:04   Subject: Any Tips for Collecting in Green Ridge Pegmatite Area, Grand Co. Colorado?
I am planning to do some rock hounding in Colorado during a summer vacation. I am trying to narrow down the many possible spots to just a few close to where I will be staying. I found a description of ...
  Topic: How to remove iron stains?
daviddillman

Replies: 24
Views: 33652

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Nov 15, 2013 17:03   Subject: Re: How to remove iron stains?
Thanks to everyone who suggested the Super Iron Out. It took several baths in the solution but the results were very good.

David
  Topic: How to remove iron stains?
daviddillman

Replies: 24
Views: 33652

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Aug 06, 2013 21:54   Subject: Re: How to remove iron stains from wavellite?
Thanks!
 
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