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19 Sep-11:22:16 Re: one more of....what is this? (Kushmeja)
19 Sep-11:21:36 Re: collection of manuel mesa (Fiebre Verde)
19 Sep-11:12:53 Re: collection of manuel mesa (Manuel Mesa)
19 Sep-11:10:24 Re: one more of....what is this? (Josele)
19 Sep-05:56:26 One more of....what is this? (Steinen)
18 Sep-19:53:30 Re: favourite topazes? (Rweaver)
18 Sep-15:08:22 Re: cause of coloration in green fluorite (Roger Warin)
18 Sep-14:21:29 Re: cause of coloration in green fluorite (Protium)
18 Sep-13:59:17 Re: cause of coloration in green fluorite (James)
18 Sep-13:51:28 Re: cause of coloration in green fluorite (Lluis)
18 Sep-13:42:41 Re: cause of coloration in green fluorite (Jesse Fisher)
18 Sep-13:02:01 Re: favourite topazes? (Jesse Fisher)
18 Sep-12:47:46 Re: franjungle collection (Franjungle)
18 Sep-12:06:27 Re: collection of manuel mesa (Manuel Mesa)
18 Sep-11:54:01 Favourite topazes? (Tobi)
17 Sep-15:35:05 Re: cause of coloration in green fluorite (Protium)
17 Sep-15:10:19 Re: cause of coloration in green fluorite (Lluis)
17 Sep-14:26:36 Re: cause of coloration in green fluorite (Gerhard Brandstetter)
17 Sep-14:09:10 Re: cause of coloration in green fluorite (Lluis)
17 Sep-13:16:41 Re: new generation for picture - ploum (Ploum)
17 Sep-13:09:49 Re: cause of coloration in green fluorite (Protium)
17 Sep-12:43:09 Re: cause of coloration in green fluorite (Lluis)
17 Sep-12:02:42 Re: cause of coloration in green fluorite (Pierre Joubert)
17 Sep-11:45:23 Cause of coloration in green fluorite (Protium)
17 Sep-10:01:11 Re: don lum collection (Don Lum)

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  Topic: Theft of Tourmalines from Fallbrook Gem & Mineral Society Museum in California
GneissWare

Replies: 13
Views: 1138

PostForum: Reporting thefts and disappearances   Posted: Sep 11, 2017 13:47   Subject: Re: Theft of Tourmalines from Fallbrook Gem & Mineral Society Museum in California
Himalaya Mine is in Mesa Grande not Pala.
This is what happens before the morning pot of coffee.....
  Topic: Theft of Tourmalines from Fallbrook Gem & Mineral Society Museum in California
GneissWare

Replies: 13
Views: 1138

PostForum: Reporting thefts and disappearances   Posted: Sep 11, 2017 08:08   Subject: Re: Theft of Tourmalines from Fallbrook Gem & Mineral Society Museum in California
photos 1 and 3 are Cryogenie Mine, Warner Springs, California,
photo 4 is Himalaya Mine, Pala
  Topic: Pyrite or Chalcopyrite?
GneissWare

Replies: 12
Views: 851

PostForum: What is it? - Where is it from?   Posted: Aug 06, 2017 12:29   Subject: Re: Pyrite or Chalkopyrite?
Probably Chalcopyrite, A specific locality would also be useful.
  Topic: Looks Like Basalt - But Could it Be Something ELSE? - Location: Israel
GneissWare

Replies: 25
Views: 2567

PostForum: What is it? - Where is it from?   Posted: Jun 14, 2017 12:14   Subject: Re: Looks Like Basalt - But Could it Be Something ELSE? - Location: Israel
I've seen the photos of the water smoothed vesticular basalts online and they all have sheens of one degree or another. This has no sheen, hence the hypothesis that it may in fact be mare basalt.

H ...
  Topic: Cornish Chalcocite but from where?
GneissWare

Replies: 5
Views: 1088

PostForum: What is it? - Where is it from?   Posted: May 28, 2017 14:20   Subject: Re: Cornish Chalcocite but from where?
There are many Cornwall localities, and likely other UK localities. If you don't get an answer here, there is a very active facebook group, search for "Collectors of British Minerals". Ian ...
  Topic: Twenty basic minerals
GneissWare

Replies: 8
Views: 1516

PostForum: Off-Topic and Introductions   Posted: May 28, 2017 10:28   Subject: Re: Twenty basic minerals
There are thousands of described minerals. I am sure nobody is familiar with all of them. But a few (say a score) I would imagine to be ones every mineral enthusiast would be expected to know.
Which ...
  Topic: Collection of Tobi
GneissWare

Replies: 819
Views: 542380

PostForum: Collection photos and Collector's page   Posted: May 28, 2017 10:09   Subject: Re: Collection of Tobi
Congratulations Tobi. You have some very fine minerals worthy of all the viewings!
  Topic: Woodhouseite with Rutile?
GneissWare

Replies: 5
Views: 981

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 21, 2017 08:55   Subject: Re: Woodhouseite with Rutile?
It is Rutile. Nice piece!
  Topic: Woodhouseite with Rutile?
GneissWare

Replies: 5
Views: 981

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 20, 2017 16:49   Subject: Re: Woodhouseite with Rutile?
This is an example from the area you describe, Peter
  Topic: Woodhouseite with Rutile?
GneissWare

Replies: 5
Views: 981

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 20, 2017 13:46   Subject: Re: Woodhouseite with Rutile?
Definitely looks like woodhouseite. Need a close up to comment on the microcrystals. Rutile is found there, but generally not associated with the woodhouseite areas.
  Topic: Removing stubborn minerals from quartz
GneissWare

Replies: 32
Views: 13467

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Apr 20, 2017 09:59   Subject: Re: Removing stubborn minerals from quartz
I clean anything needing it. I have a full lab with air scribes (3 kinds), air abrasion, acids, etc. I mostly end up using Waller solution (premixed here as Super Iron Out), phosphoric acid and abra ...
  Topic: Removing stubborn minerals from quartz
GneissWare

Replies: 32
Views: 13467

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Apr 20, 2017 09:03   Subject: Re: Removing stubborn minerals from quartz
HF (hydrofluoric acid) is orders of magnitude more dangerous than HCl (hydrochoric acid, muriatic acid).
  Topic: Removing stubborn minerals from quartz
GneissWare

Replies: 32
Views: 13467

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Apr 19, 2017 23:11   Subject: Re: Removing stubborn minerals from quartz
Many aluminum cleaners contain HF or ammonium bifluoride (which is a buffered form of HF). So, check the SDS and be careful.

Psilomolene, by the way is a bit harder to remove. More sooty Mn oxide ...
  Topic: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
GneissWare

Replies: 5
Views: 1155

PostForum: What is it? - Where is it from?   Posted: Apr 16, 2017 16:20   Subject: Re: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
Interesting Jordi. Arsenopyrite is listed as occurring, but the literature suggests it is not too prevalent. Perhaps, like many localities examined today by analytical techniques, many of the specie ...
  Topic: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
GneissWare

Replies: 5
Views: 1155

PostForum: What is it? - Where is it from?   Posted: Apr 16, 2017 11:18   Subject: Re: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
Hi Tobi,
I was also thinking Arsenic, but generally the Arsenic turns dark-grey to black with time, whereas Stibarsen has a tin-white color. This seems more silvery.than the matrix, which is definit ...
  Topic: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
GneissWare

Replies: 5
Views: 1155

PostForum: What is it? - Where is it from?   Posted: Apr 16, 2017 10:20   Subject: Old St. Andreasberg specimen of Arsenic, Pyrargyrite and ?
I am trying to identify some of the small crystals on this circa 1900 specimen from Germany, particularly the fine (small) silvery gray material covering much of the specimen, and the reddish inclusio ...
  Topic: Diopside with Garnet label discrepancy
GneissWare

Replies: 4
Views: 1440

PostForum: What is it? - Where is it from?   Posted: Mar 03, 2017 13:50   Subject: Re: Diopside with Garnet label discrepancy
You can look up localities on mindat.org and see representative samples of the minerals that may occur. It is not 100 percent perfect, but it is quite good for this kind of research.
  Topic: Bob's rocks
GneissWare

Replies: 344
Views: 193548

PostForum: Collection photos and Collector's page   Posted: Feb 27, 2017 00:33   Subject: Bob's rocks - Chinese minerals
A few Chinese minerals from the past 2 years...
  Topic: Bob's rocks
GneissWare

Replies: 344
Views: 193548

PostForum: Collection photos and Collector's page   Posted: Feb 24, 2017 20:06   Subject: Re: Bob's rocks
Thanks, all!
  Topic: Bob's rocks
GneissWare

Replies: 344
Views: 193548

PostForum: Collection photos and Collector's page   Posted: Feb 23, 2017 22:52   Subject: Bob's rocks - Yaogangxian Fluorite
...
 
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