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Newest topics and users posts
22 Jan-02:42:32 Re: micro photos of inclusions in quartz (Zbhjzm)
21 Jan-15:32:22 Re: don lum collection (Don Lum)
21 Jan-15:06:37 Re: collection of michael shaw (Crosstimber)
21 Jan-14:45:59 Re: don lum collection (Don Lum)
21 Jan-11:15:25 Re: collection of heimo hellwig (Heimo Hellwig)
21 Jan-08:42:10 Re: franjungle collection (Franjungle)
20 Jan-23:21:46 Re: any help with id? (Alfredo)
20 Jan-19:22:32 Any help with id? (Jedorton)
20 Jan-14:32:00 Re: help with mineral found, san rocendo canyon, mexico (Yazzyenna)
20 Jan-02:00:25 Re: collecting focuses and how they can change (Andreas Gerstenberg)
19 Jan-23:46:36 Re: a bit on the economics of being a mineral dealer (Bob Kerr)
19 Jan-23:26:28 Re: help with mineral found, san rocendo canyon, mexico (Peter Megaw)
19 Jan-23:17:14 Help with mineral found, san rocendo canyon, mexico (Yazzyenna)
19 Jan-18:13:19 Re: collecting focuses and how they can change (Don Lum)
19 Jan-15:08:21 Re: a bit on the economics of being a mineral dealer (Pierre Joubert)
19 Jan-14:00:11 Re: andreas gerstenberg collection (Tobi)
19 Jan-13:56:49 Re: favourite fluorites? (Tobi)
19 Jan-13:39:16 Re: a bit on the economics of being a mineral dealer (Peter Lemkin)
19 Jan-13:14:06 Re: a bit on the economics of being a mineral dealer (Pierre Joubert)
19 Jan-12:26:51 Re: locality for this probable natrolite (?) specimen? (John Medici)
19 Jan-12:13:41 Re: a bit on the economics of being a mineral dealer (Pete Modreski)
19 Jan-11:43:30 Re: unsure about japan law twin, please help. (Roger Warin)
19 Jan-11:38:59 Re: andreas gerstenberg collection (Jordi Fabre)
19 Jan-11:19:56 Re: andreas gerstenberg collection (Andreas Gerstenberg)
19 Jan-07:29:09 Re: franjungle collection (Franjungle)

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  Topic: The overall health of this hobby
GneissWare

Replies: 26
Views: 2250

PostForum: Off-Topic and Introductions   Posted: Jan 06, 2018 11:35   Subject: Re: The overall health of this hobby
Peter, I like your analysis, except I am just a bit concerned about fixation with cannabis!

Prices have certainly increased over the years, but the quality has also, in many cases, followed along. ...
  Topic: fluorescent mineral associated with the vesuvianite from Sierra de las Cruces, mexico
GneissWare

Replies: 9
Views: 781

PostForum: What is it? - Where is it from?   Posted: Jan 05, 2018 22:07   Subject: Re: fluorescent mineral associated with the vesuvianite from Sierra de las Cruces, mexico
I spent 3 years collecting at this locality. These are not vesuvianite. The vesuvianites are more elongated in shape. I have several hundred pounds of these in my garage.
  Topic: fluorescent mineral associated with the vesuvianite from Sierra de las Cruces, mexico
GneissWare

Replies: 9
Views: 781

PostForum: What is it? - Where is it from?   Posted: Jan 03, 2018 21:34   Subject: Re: fluorescent mineral associated with the vesuvianite from Sierra de las Cruces, mexico
BTW, that is a garnet specimen.
  Topic: Minerals for fossils
GneissWare

Replies: 13
Views: 1213

PostForum: Mineral Exchange Area   Posted: Dec 07, 2017 21:12   Subject: Re: Minerals for fossils
Go ahead and post some mineral photos and a list of the types of fossils you like. Someone here will probably be interested!
  Topic: Question about Sphalerite from Spain?
GneissWare

Replies: 11
Views: 1334

PostForum: What is it? - Where is it from?   Posted: Nov 08, 2017 20:54   Subject: Re: question about Sphalerite from Spain
I don't see any matrix. Elwood matrix is a distinctive, fine-grained tannish material.
  Topic: Theft of Tourmalines from Fallbrook Gem & Mineral Society Museum in California
GneissWare

Replies: 26
Views: 4900

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: 26
Views: 4900

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: 1854

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: 4499

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: 1692

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: 2417

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: 839
Views: 591298

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: 1338

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: 1338

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: 1338

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: 15809

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: 15809

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: 15809

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: 1651

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: 1651

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 ...
 
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