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Newest topics and users posts
29 Mar-07:25:48 Re: collection of volkmar stingl (Tobi)
29 Mar-06:20:21 Re: identification question (James Catmur)
29 Mar-00:03:53 Identification question (Jim Wilkinson)
28 Mar-23:16:36 Re: collection of volkmar stingl (Volkmar Stingl)
28 Mar-18:25:15 Re: collection of firmo espinar (Firmo Espinar)
28 Mar-09:37:50 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-19:47:08 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Pete Richards)
27 Mar-16:15:44 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-15:18:59 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Alfredo)
27 Mar-14:39:29 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-05:21:48 Re: the mim museum in beirut, lebanon (Mim Museum)
27 Mar-05:03:26 Re: trying to find information on rose/pink quartz and tourmaline associations. (Ning)
27 Mar-02:39:50 Re: the mim museum in beirut, lebanon (Tobi)
27 Mar-00:23:28 Re: collection of volkmar stingl (Volkmar Stingl)
26 Mar-00:53:41 Re: collection of volkmar stingl (Volkmar Stingl)
25 Mar-13:32:10 Re: collection of michael shaw (Michael Shaw)
25 Mar-00:25:58 The mizunaka collection - quartz (Am Mizunaka)
23 Mar-13:35:22 Re: collection of firmo espinar (Firmo Espinar)
22 Mar-08:32:28 Re: collection of michael shaw (Michael Shaw)
22 Mar-04:20:41 Re: the mim museum in beirut, lebanon (Mim Museum)
21 Mar-22:49:19 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:47:40 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:45:25 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-15:34:23 Re: the mizunaka collection - quartz (Am Mizunaka)
21 Mar-14:35:08 Re: jim’s mineral collection (Jim Wilkinson)

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  Topic: Are there any big mineral shows in canada?
Peter Megaw

Replies: 5
Views: 558

PostForum: Mineral Shows   Posted: Mar 10, 2024 09:15   Subject: Re: Are there any big mineral shows in canada?
Biggest I know of is the Bancroft Show....lots of self collectors
  Topic: Fluorite locality
Peter Megaw

Replies: 6
Views: 1056

PostForum: What is it? - Where is it from?   Posted: Feb 16, 2024 18:53   Subject: Re: Fluorite locality
Agreed...the calcite on the fluorite and the character of the sphalerite matrix scream Elmwood
  Topic: Can anyone tell me if this is Stellar Beam Calciite?
Peter Megaw

Replies: 8
Views: 1002

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Feb 14, 2024 18:34   Subject: Re: Can anyone tell me if this is Stellar Beam Calciite?
Agreed on the silliness Alfredo!...but I couldn't resist Googling "Stellar Beam Calcite". All hocus-pocus aside that term appears to apply to calcite from Elmwood, so this piece qualifies. ...
  Topic: Please Help Me To Identify This Stone.
Peter Megaw

Replies: 17
Views: 5200

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Dec 16, 2023 08:41   Subject: Re: Please Help Me To Identify This Stone.
With that much Thorium it should be quite hot...

Unless this is some outrageous variety of something like Calzirtite, if the numbers are real I suspect an industrial product of some kind
  Topic: Nifontovite
Peter Megaw

Replies: 8
Views: 3681

PostForum: Minerals and Mineralogy   Posted: Dec 10, 2023 18:26   Subject: Re: Nifontovite
Great pictures Roger...love those second order colors!

Not sure which tourmaline group member you're calculating those percentages from, but
what about Quingsongite BN which I think runs 44% B b ...
  Topic: Nifontovite
Peter Megaw

Replies: 8
Views: 3681

PostForum: Minerals and Mineralogy   Posted: Dec 09, 2023 17:04   Subject: Re: Nifontovite
Roger...The Charcas skarns are a series of "scabs" plastered on the sides of an intrusion about 1.5 km in diameter. They wrap around about half of its circumference but are not continuous. ...
  Topic: Nifontovite
Peter Megaw

Replies: 8
Views: 3681

PostForum: Minerals and Mineralogy   Posted: Dec 09, 2023 14:24   Subject: Re: Nifontovite
Interesting species from an interesting skarn system dominated by boron silicates...danburite probably comprises 80% of the gangue. The abundance of boron at Charcas may indicate that there are borate ...
  Topic: Fluorite crystallography?
Peter Megaw

Replies: 27
Views: 9072

PostForum: Minerals and Mineralogy   Posted: Nov 27, 2023 10:13   Subject: Re: Fluorite crystallography?
Tobi...could I get high-rez versions of these images with permission to publish? I am working on an article on Naica and these are worth considering for inclusion.
  Topic: Fluorite crystallography?
Peter Megaw

Replies: 27
Views: 9072

PostForum: Minerals and Mineralogy   Posted: Nov 27, 2023 10:12   Subject: Re: Fluorite crystallography?
Nice fluorites Tobi! Classic Naica.

A high percentage of Naica fluorites show this combination of the cube (001) and octahedron (111)...commonly called a cube-octahedron...or cube-octahedral.
...
  Topic: Le Burc?
Peter Megaw

Replies: 8
Views: 3965

PostForum: Minerals and Mineralogy   Posted: Nov 13, 2023 13:00   Subject: Re: Le Burc?
I'm no expert on these, but the blue does not look right for Le Burc
  Topic: American quartz without label
Peter Megaw

Replies: 4
Views: 8314

PostForum: What is it? - Where is it from?   Posted: Jul 08, 2023 12:58   Subject: Re: American quartz without label
A very long time ago I collected quartz very much like this from an outcrop across from the Pride of the West Mine in the Silverton Colorado area. The black stuff was not easy to get off.
  Topic: An idea for a collection
Peter Megaw

Replies: 20
Views: 13580

PostForum: Minerals and Mineralogy   Posted: May 11, 2023 07:51   Subject: Re: An idea for a collection
At least 2 museums have set up exhibits based on Hazen and Co's work on Mineral Evolution. One is at the new University of Arizona Alfie Norville Mineral and Gem Museum, this exhibit traces mineral e ...
  Topic: A very strange specimen of Hardin Co., Illinois
Peter Megaw

Replies: 6
Views: 5759

PostForum: Minerals and Mineralogy   Posted: Mar 13, 2023 09:20   Subject: Re: A very strange specimen of Hardin Co., Illinois
I love mineralized fossils and this is great example with a cool story to tell. We tend to focus on the big deposits, but often small occurrences yield some of the better curiosities! You sent me to t ...
  Topic: Any Ideas?
Peter Megaw

Replies: 22
Views: 13170

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Dec 28, 2022 09:43   Subject: Re: Any Ideas?
Looks somewhat like a diamond macle
  Topic: Please identify this!
Peter Megaw

Replies: 2
Views: 3324

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Nov 21, 2022 19:25   Subject: Re: Please identify this!
We need that hardness test first please!

Betting you can't scratch it with a knife though
  Topic: Atlas of Spanish minerals
Peter Megaw

Replies: 4
Views: 11199

PostForum: Mineralogical Literature   Posted: Oct 25, 2022 10:42   Subject: Re: Atlas of Spanish minerals
Muchas Felicidades! Aparece un trabajo de valientes!
  Topic: Help ID'ing some oddities please.
Peter Megaw

Replies: 7
Views: 4116

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Oct 17, 2022 12:49   Subject: Re: Help ID'ing some oddities please.
We need a little more information than "non magnetic" ...especially hardness...I doubt you can scratch this with a pin or tip of a knife, but that would be the first test I'd recommend

Th ...
  Topic: Dark, metallic mystery mineral - Magnetite? Ilmenite? Hematite?
Peter Megaw

Replies: 8
Views: 4841

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Oct 04, 2022 13:28   Subject: Re: Dark, metallic mystery mineral - Magnetite? Ilmenite? Hematite?
You are right that the geology seems completely wrong for this to be a magmatic or metamorphic product. The fact that some is bubbly and some not suggests differences in how it was poured. You may b ...
  Topic: Dark, metallic mystery mineral - Magnetite? Ilmenite? Hematite?
Peter Megaw

Replies: 8
Views: 4841

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Oct 04, 2022 10:33   Subject: Re: Dark, metallic mystery mineral - Magnetite? Ilmenite? Hematite?
You don't need a streak plate for hematite...just scratch it with a nail and you'll see that classic red-brown color where the crystals are crushed.

But even identifying it mineralogically will on ...
  Topic: Calcite is acting strange under UV
Peter Megaw

Replies: 11
Views: 7695

PostForum: Minerals and Mineralogy   Posted: Aug 08, 2022 08:11   Subject: Re: Calcite is acting strange under UV
Sorry, misread locality...not Nanisivik so forget MVT

These Indian deposits are hosted in basalts...so different source and explanation, but still one of hundreds of calcite environments and fluore ...
 
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