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18 Jun-13:08:15 Re: which locality? (Andreas Gerstenberg)
18 Jun-09:47:28 Re: which locality? (Gerhard Niklasch)
18 Jun-08:40:52 Re: which locality? (Mathias)
18 Jun-08:33:33 Re: which locality? (Lluis)
18 Jun-06:59:00 Re: which locality? (Gerhard Niklasch)
18 Jun-06:41:45 Question regarding portuguese minerals (Liaemars)
18 Jun-03:33:29 Re: my collection of crystals (Pierre Joubert)
18 Jun-03:26:36 Which locality? (Mathias)
18 Jun-00:26:50 Re: collection of heimo hellwig (Heimo Hellwig)
17 Jun-23:05:43 The mizunaka collection - rhodochrosite (Am Mizunaka)
17 Jun-12:53:29 Re: franjungle collection (Franjungle)
17 Jun-10:18:10 Re: micro photos of inclusions in quartz (Zbhjzm)
17 Jun-09:07:25 Re: micro photos of inclusions in quartz (Alfredo)
17 Jun-08:38:20 Re: micro photos of inclusions in quartz (Bob Harman)
17 Jun-03:04:09 Re: micro photos of inclusions in quartz (Zbhjzm)
16 Jun-22:09:03 Re: hairlike gold inclusions in quartz?? (Zbhjzm)
16 Jun-17:47:24 Re: tucson show 2018 (Greg Lilly)
16 Jun-16:53:34 Re: don lum collection (Don Lum)
16 Jun-16:02:35 Re: my collection of crystals (Bob Harman)
16 Jun-15:42:49 Re: my collection of crystals (Kaleb)
16 Jun-15:24:15 Re: my collection of crystals (Kevin Schofield)
16 Jun-15:04:04 Re: hairlike gold inclusions in quartz?? (Alfredo)
16 Jun-15:03:33 Re: what crystal is this (Bob Harman)
16 Jun-14:57:37 Re: what crystal is this (Lluis)
16 Jun-14:52:19 Re: my collection of crystals (Bob Harman)

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

Replies: 4
Views: 2246

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: 2246

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: 7737

PostForum: Favorite Minerals   Posted: Jan 08, 2017 17:23   Subject: Re: Favourite Beryls?
How rare are emerald/aquamarines from Pakistan? Looks very unusual.
  Topic: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
daviddillman

Replies: 6
Views: 3064

PostForum: What is it? - Where is it from?   Posted: Jan 07, 2017 21:15   Subject: Re: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chih
Dr. Megaw,

Thanks you for this detailed information. This explains the discrepancies I have been finding. I will have the specimen analyzed to make the cinnabar vs. minium determination.
Seve ...
  Topic: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
daviddillman

Replies: 6
Views: 3064

PostForum: What is it? - Where is it from?   Posted: Jan 05, 2017 18:27   Subject: Re: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chih
John: Thanks for the information. I dug around in my office and realized I had the Panczer book and you are correct.
  Topic: Don Lum Collection
daviddillman

Replies: 1169
Views: 803604

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: 1169
Views: 803604

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: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
daviddillman

Replies: 6
Views: 3064

PostForum: What is it? - Where is it from?   Posted: Jan 03, 2017 00:37   Subject: Re: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chih
Third specimen
  Topic: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
daviddillman

Replies: 6
Views: 3064

PostForum: What is it? - Where is it from?   Posted: Jan 03, 2017 00:35   Subject: Re: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chih
I didn't not get all the attachments included.
  Topic: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
daviddillman

Replies: 6
Views: 3064

PostForum: What is it? - Where is it from?   Posted: Jan 03, 2017 00:17   Subject: Locality Correct? - Minium, Plumbojarosite, Cerrusite specimens from Tres Marias, Chihuahu
I would like to request any feedback from the forum members about the locality validity of some specimens purchased from estate sale of a mineral dealer who was active from the 1950s to the late 1980. ...
  Topic: Unreliable Water Guns?
daviddillman

Replies: 12
Views: 6183

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: 6183

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: 6183

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: 9471

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: 9471

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: 9471

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: 4878

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: 2590

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: Where are this Azurite Balls From
daviddillman

Replies: 0
Views: 3659

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 22, 2015 17:37   Subject: Where are this Azurite Balls From
I picked up some Azurite balls during the estate sale of a long time mineral dealer. I found quite a few azurite balls in one flat; including two that are attached to matrix. There were also some lo ...
  Topic: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite
daviddillman

Replies: 5
Views: 4795

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
 
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