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A general guide for using the Forum with some rules and tips
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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| Search found 35 matches |
| Author | Message |
|---|---|
 Topic: Why this fluorapatite is purple? |
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| Kevin Conroy Replies: 11 Views: 18887 |
 Forum: 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 |
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| Topic: About cyclic twinning - (5) |
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| Kevin Conroy Replies: 157 Views: 292034 |
Forum: 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) |
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| Kevin Conroy Replies: 157 Views: 292034 |
Forum: 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 ... |
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| Topic: About cyclic twinning - (5) |
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| Kevin Conroy Replies: 157 Views: 292034 |
Forum: 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 ... |
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| Topic: Lonsdaleite? |
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| Kevin Conroy Replies: 3 Views: 5577 |
Forum: 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? |
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| Kevin Conroy Replies: 11 Views: 9538 |
Forum: 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" |
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| Kevin Conroy Replies: 10 Views: 10242 |
Forum: 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 |
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| Kevin Conroy Replies: 8 Views: 9277 |
Forum: 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 ... |
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| Topic: Hematite Confirmation and Location |
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| Kevin Conroy Replies: 8 Views: 9277 |
Forum: 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 |
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| Kevin Conroy Replies: 8 Views: 22925 |
Forum: 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 |
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| Kevin Conroy Replies: 33 Views: 66510 |
Forum: 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? |
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| Kevin Conroy Replies: 9 Views: 10985 |
Forum: 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 ... |
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| Topic: Aragonite "buttons" |
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| Kevin Conroy Replies: 6 Views: 8511 |
Forum: 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 |
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| Kevin Conroy Replies: 4 Views: 5783 |
Forum: 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 |
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| Kevin Conroy Replies: 18 Views: 18108 |
Forum: 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 |
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| Kevin Conroy Replies: 11 Views: 47351 |
Forum: 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? |
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| Kevin Conroy Replies: 19 Views: 24534 |
Forum: 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 |
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| Kevin Conroy Replies: 11 Views: 22843 |
Forum: 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 |
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| Kevin Conroy Replies: 11 Views: 22843 |
Forum: 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 ... |
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| Topic: Specimens from near the Coronel Manuel Rodriguez Mine, Chile |
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| Kevin Conroy Replies: 11 Views: 22843 |
Forum: 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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