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Newest topics and users posts
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)
21 Mar-14:15:36 The 4th phoenix heritage mineral show (phms) hosted by mineralogical society of arizona (m (Chris Whitney-smith)
21 Mar-04:36:10 Re: the mizunaka collection (Tobi)
21 Mar-04:11:47 Re: jim’s mineral collection (James Catmur)
20 Mar-23:34:15 The mizunaka collection - quartz (Am Mizunaka)
20 Mar-18:13:16 Re: jim’s mineral collection (Jim Wilkinson)

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The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
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  Topic: Why this fluorapatite is purple?
Kevin Conroy

Replies: 11
Views: 17572

PostForum: Minerals and Mineralogy   Posted: Dec 10, 2020 13:20   Subject: Re: Why this fluorapatite is purple?
An interesting link in a similar discussion was just posted on Mindat:
https://www.mindat.org/mesg-544963.html
  Topic: About cyclic twinning - (5)
Kevin Conroy

Replies: 157
Views: 276726

PostForum: Featured Columns of FMF   Posted: Aug 09, 2020 22:29   Subject: Re: About cyclic twinning - (5)
Don, thank you for posting these. The three specimens on the right side of the top row are superb, and clearly show the cyclic twinning that the Magnet Cove rutiles are famous for. I added stars o ...
  Topic: About cyclic twinning - (5)
Kevin Conroy

Replies: 157
Views: 276726

PostForum: Featured Columns of FMF   Posted: Aug 09, 2020 14:28   Subject: Re: About cyclic twinning - (5)
Bob, the Magnet Cove rutile sixlings/eightlings/sixteenlings and paramorphs definitely look different. If you could post a photo of yours I could give you my opinion of which it is.

Here's a rath ...
  Topic: About cyclic twinning - (5)
Kevin Conroy

Replies: 157
Views: 276726

PostForum: Featured Columns of FMF   Posted: Aug 05, 2020 22:48   Subject: Re: About cyclic twinning - (5)
Peter, I think that this is one of the most well written and referenced posts that I’ve seen. You’ve obviously written this because of a deep interest in these beauties.

However, I disagree with ...
  Topic: Lonsdaleite?
Kevin Conroy

Replies: 3
Views: 4831

PostForum: What is it? - Where is it from?   Posted: Aug 03, 2020 16:18   Subject: Re: Lonsdaleite?
I would be VERY cautious about this! Please see: https://www.mindat.org/min-2431.html
  Topic: Pyrite?
Kevin Conroy

Replies: 11
Views: 8570

PostForum: What is it? - Where is it from?   Posted: Jun 24, 2020 20:29   Subject: Re: Pyrite?
Yes, it's pyrite. What you found is similar to the pyrite "suns" found in some coal mines in Illinois. Please see: https://www.mindat.org/gallery.php?loc=3758&min=3314
  Topic: Another "where is it from"
Kevin Conroy

Replies: 10
Views: 9435

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 20, 2020 18:28   Subject: Re: Another "where is it from"
I think that this may be from one of the Viburnum Trend mines. The shape of the pyrite, and the size and color of the dolomite crystals, is very similar to some that I've seen from the mid to southe ...
  Topic: Hematite Confirmation and Location
Kevin Conroy

Replies: 8
Views: 8512

PostForum: What is it? - Where is it from?   Posted: Mar 22, 2020 15:58   Subject: Re: Hematite Confirmation and Location
I don't know the location, but this looks like spinel-law twinned galena crystals.

The red-brown streak is not galena.

Yes, the streak is definitely not consistent with galena. To me it looks ...
  Topic: Hematite Confirmation and Location
Kevin Conroy

Replies: 8
Views: 8512

PostForum: What is it? - Where is it from?   Posted: Mar 22, 2020 15:05   Subject: Re: Hematite Confirmation and Location
I don't know the location, but this looks like spinel-law twinned galena crystals.
  Topic: Appropriate Photo Editing Software
Kevin Conroy

Replies: 8
Views: 21771

PostForum: Micros & Macros - Images of Minerals   Posted: Feb 27, 2020 16:54   Subject: Re: Appropriate Photo Editing Software
If you don't need stacking I would suggest Irfranview, a freeware.
  Topic: Collecting and imagining
Kevin Conroy

Replies: 33
Views: 60112

PostForum: Mineral Art and Artists   Posted: Feb 06, 2020 17:38   Subject: Re: Collecting and imagining.
This copper from New Cornelia Mine, Arizona, USA reminds me of a sargasso seahorse. Crystals to over 6 cm in length.
  Topic: Malachite ps azurite from Mibladen, Morocco?
Kevin Conroy

Replies: 9
Views: 10005

PostForum: What is it? - Where is it from?   Posted: Jan 15, 2020 13:25   Subject: Re: Malachite ps azurite from Mibladen, Morocco?
It may just be my computer screen, but are we sure that this is malachite after azurite? I'm getting a bluish hue, as if it's chrysocolla.

No matter where it's from it's a very aesthetic specimen ...
  Topic: Aragonite "buttons"
Kevin Conroy

Replies: 6
Views: 7594

PostForum: What is it? - Where is it from?   Posted: Dec 10, 2019 23:26   Subject: Re: Aragonite "buttons"
These were once referred to as "Indian money" aragonite, but I haven't heard this term used for quite a while. However, if you search for this term on Google you'll see several images.
  Topic: Uknown mineral specimen
Kevin Conroy

Replies: 4
Views: 5227

PostForum: What is it? - Where is it from?   Posted: Dec 01, 2019 09:35   Subject: Re: Uknown mineral specimen
Hi, I think that this is probably chalcedony after aragonite from Valle de las Plumas, Argentina.
  Topic: Buyers remorse, sellers remorse, donors remorse and more
Kevin Conroy

Replies: 18
Views: 16614

PostForum: Off-Topic and Introductions   Posted: Nov 19, 2019 09:43   Subject: Re: Buyers remorse, sellers remorse, donors remorse and more
I second Gail's comments on loaning specimens to museums. I had two cases of some of my better Missouri minerals in the Colorado School of Mines Museum. The loan was only for a year, and during th ...
  Topic: Specimens incorrectly labeled Bravoite coating Pyrite from Colorado
Kevin Conroy

Replies: 11
Views: 44660

PostForum: Incorrect classification and fakes   Posted: Nov 18, 2019 17:08   Subject: Re: Specimens incorrectly labeled Bravoite coating Pyrite from Colorado
I was just wondering if the molybdenum coatings were confirmed for the gray stuff on all of the pyrite from the Rico area mines. I'm having a little trouble finding references online so I figured I ...
  Topic: What's up with minfind?
Kevin Conroy

Replies: 19
Views: 23043

PostForum: Off-Topic and Introductions   Posted: Jul 17, 2019 19:21   Subject: Re: what's up with minfind?
It's a known problem that Jolyon is working on. Please see: https://www.mindat.org/forum.php?read,7,466608,466616#msg-466616 and https://www.mindat.org/forum.php?read,7,466812,466812#msg-466812
  Topic: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
Kevin Conroy

Replies: 11
Views: 21089

PostForum: Incorrect classification and fakes   Posted: Jun 02, 2019 16:55   Subject: Re: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
David, you're welcome! I enjoy looking into things, I always learn something.
  Topic: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
Kevin Conroy

Replies: 11
Views: 21089

PostForum: Incorrect classification and fakes   Posted: Jun 01, 2019 16:32   Subject: Re: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
Hi David,

I must admit that I've never been to this locality, so I don't have any first-hand knowledge to share. I would suggest following two discussions that are currently on Mindat: https://ww ...
  Topic: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
Kevin Conroy

Replies: 11
Views: 21089

PostForum: Incorrect classification and fakes   Posted: May 31, 2019 19:07   Subject: Re: Specimens from near the Coronel Manuel Rodriguez Mine, Chile
To me, the distinction for the minerals found at the "pond" is that they would not have naturally formed there if not for the introduction of a solution carrying concentrations of elements/c ...
 
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