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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 708 matches |
| Author | Message |
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 Topic: Locality? |
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| Peter Megaw Replies: 5 Views: 362 |
 Forum: What is it? - Where is it from? Posted: Apr 14, 2024 07:32 Subject: Re: Locality? |
| Ask Bill Dameron...Barite Bill! | |
| Topic: Are there any big mineral shows in canada? |
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| Peter Megaw Replies: 5 Views: 855 |
Forum: 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 |
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| Peter Megaw Replies: 6 Views: 1259 |
Forum: 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? |
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| Peter Megaw Replies: 8 Views: 1207 |
Forum: 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. |
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| Peter Megaw Replies: 17 Views: 5484 |
Forum: 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 |
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| Topic: Nifontovite |
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| Peter Megaw Replies: 8 Views: 3931 |
Forum: 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 ... |
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| Topic: Nifontovite |
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| Peter Megaw Replies: 8 Views: 3931 |
Forum: 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 |
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| Peter Megaw Replies: 8 Views: 3931 |
Forum: 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? |
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| Peter Megaw Replies: 27 Views: 9612 |
Forum: 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? |
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| Peter Megaw Replies: 27 Views: 9612 |
Forum: 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. ... |
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| Topic: Le Burc? |
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| Peter Megaw Replies: 8 Views: 4120 |
Forum: 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 |
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| Peter Megaw Replies: 4 Views: 8542 |
Forum: 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 |
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| Peter Megaw Replies: 20 Views: 13906 |
Forum: 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 |
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| Peter Megaw Replies: 6 Views: 5922 |
Forum: 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? |
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| Peter Megaw Replies: 22 Views: 13555 |
Forum: 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! |
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| Peter Megaw Replies: 2 Views: 3461 |
Forum: 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 |
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| Topic: Atlas of Spanish minerals |
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| Peter Megaw Replies: 4 Views: 11541 |
Forum: 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. |
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| Peter Megaw Replies: 7 Views: 4244 |
Forum: 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 ... |
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| Topic: Dark, metallic mystery mineral - Magnetite? Ilmenite? Hematite? |
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| Peter Megaw Replies: 8 Views: 4998 |
Forum: 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? |
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| Peter Megaw Replies: 8 Views: 4998 |
Forum: 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 ... |
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