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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 91 matches |
| Author | Message |
|---|---|
 Topic: Article on nucleation and crystallization of Naica in Chem Soc Rev |
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| gemlover Replies: 1 Views: 5006 |
 Forum: Minerals and Mineralogy Posted: Mar 18, 2014 05:22 Subject: Re: Article on nucleation and crystallization of Naica in Chem Soc Rev |
| Thank you for publishing this extremely interesting article. a quick scan when it downloaded showed me that is would be a great read. Thanks again,
John |
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| Topic: Corundum var. Sapphire and Ruby from same locality |
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| gemlover Replies: 10 Views: 19766 |
Forum: Minerals and Mineralogy Posted: Feb 24, 2014 02:21 Subject: Re: Corundum var. Sapphire and Ruby from same locality |
| Yes, ruby and sapphire can occur in the same locality. Check out the geology of Franklin, NC (natural ruby and sapphire mines) then that trends NE to the Hiddenite NC area (emeralds).
john |
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| Topic: New finds in Chatham County, NC |
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| gemlover Replies: 7 Views: 11142 |
Forum: Mines and Mineral Localities Posted: Feb 14, 2014 14:01 Subject: Re: New finds in Chatham County, NC |
| The gallery has Wake and Randolph counties with samples, no mention in the gallery of Chatham County. The link is dead. and yes i did change the "dot" into "."
john |
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| Topic: Collection of John Atwell Rasmussen |
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| gemlover Replies: 1 Views: 7310 |
Forum: Collection photos and Collector's page Posted: Jan 18, 2014 23:12 Subject: Re: Collection of John Atwell Rasmussen |
| Fluorite crystals covered with bitumen (natural petroleum product) from Hardin County, Illinois USA. The sample measures 55 x 50 x 40 mm. | |
| Topic: Cleaning an Amethyst !!! |
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| gemlover Replies: 11 Views: 17376 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jan 12, 2014 16:59 Subject: Re: Cleaning an Amethyst !!! |
| First, warm water, soap and a soft toothbrush
then, if you need to do additional cleaning, especially rust stains -- oxalic acid soak -- but be careful with acids and use gloves, eye protection, et ... |
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| Topic: A hardness gemologist tool |
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| gemlover Replies: 11 Views: 15596 |
Forum: Off-Topic and Introductions Posted: Jan 09, 2014 02:08 Subject: Re: a hardness gemologist tool |
| We used wheels like this in my mineralogy course in college (50 years ago). I have not seen one since then. Thanks for the memories. BTW, a gemologist would not use this, as we don't scratch the cu ... | |
| Topic: Color change minerals |
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| gemlover Replies: 6 Views: 8780 |
Forum: Minerals and Mineralogy Posted: Jan 05, 2014 16:48 Subject: Re: Color change minerals |
| Great picture. Thanks Roger. I have not seen this excellent color change documentation on any of my gemology sites.
john |
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| Topic: Method of Making a Custom Mineral Mount |
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| gemlover Replies: 5 Views: 10988 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Dec 25, 2013 19:23 Subject: Re: Method of Making a Custom Mineral Mount |
| Thanks for the great illustrations for this method.
John |
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| Topic: The rarest twin of calcite, a Chinese specimen |
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| gemlover Replies: 4 Views: 8910 |
Forum: Minerals and Mineralogy Posted: Oct 06, 2013 11:12 Subject: Re: The rarest twin of calcite, a Chinese specimen |
| And i can easily see the bishop's mitre. great posting, thanks. i still have great difficulty visualizing crystal planes, your graphics are a wonderful help.
john |
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| Topic: Hazards of prospecting for mineral specimens and snakes |
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| gemlover Replies: 19 Views: 30099 |
Forum: Off-Topic and Introductions Posted: Sep 08, 2013 20:52 Subject: Re: Hazards of prospecting for mineral specimens and snakes |
| Maine good, the only state that has never had a native pit viper in it. All other states in US have at least one pit viper in it. Here in SC we have all four types. Fortunately, the coral snakes on ... | |
| Topic: Why an organic substance should not be called a mineral? |
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| gemlover Replies: 18 Views: 39982 |
Forum: Incorrect classification and fakes Posted: Sep 05, 2013 06:09 Subject: Re: Why an organic substance should not be called a mineral? |
| Because a chemical compound is produced by an organic animal/plant does not make it an organic compound. Whevellite does not have an organic formula, and it is produced by hydrothermal activity (as w ... | |
| Topic: Why an organic substance should not be called a mineral? |
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| gemlover Replies: 18 Views: 39982 |
Forum: Incorrect classification and fakes Posted: Sep 04, 2013 22:04 Subject: Re: why an organic substance should not be called a mineral |
| What organic compound are you considering to have a crystalline structure (not chemical formula, actual crystals)?
John |
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| Topic: Movie about volcanic and hydrothermal in New Zealand |
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| gemlover Replies: 5 Views: 9316 |
Forum: Off-Topic and Introductions Posted: Sep 04, 2013 09:03 Subject: Re: Movie about volcanic and hydrothermal in New Zealand |
| Thank you for the fantastic vision of New Zealand's geothermal activity. Your presentation was absolutely beautiful. I loved it.
John |
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| Topic: Movie about volcanic and hydrothermal in New Zealand |
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| gemlover Replies: 5 Views: 9316 |
Forum: Off-Topic and Introductions Posted: Sep 04, 2013 06:26 Subject: Re: Movie about volcanic and hydrothermal in New Zealand |
| Write out the link in words. Example my email address would be:
john at rasmussengems dot com then one of the moderators will change to URL or reader can do same. John |
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| Topic: Ecole des Mines - Paris |
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| gemlover Replies: 3 Views: 11551 |
Forum: École des Mines de Paris (Paris School of Mines) Posted: Aug 24, 2013 04:37 Subject: Re: Ecole des Mines - Paris |
| Very nice set of photos. sometimes it is great to see the pieces not in a professional display shot.
john |
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| Topic: Presentation of new members - Reference Thread |
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| gemlover Replies: 501 Views: 564944 |
Forum: Off-Topic and Introductions Posted: Aug 11, 2013 18:21 Subject: Re: Presentation of new members - Hello from France (Stéphane Maury) |
| Bonjour,
that about uses up my abilities in the French language. Welcome to the forum. John |
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| Topic: El Tule Mine, Melchor Musquiz, Coahuila, Mexico |
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| gemlover Replies: 7 Views: 17280 |
Forum: Mines and Mineral Localities Posted: Jul 30, 2013 21:37 Subject: Re: El Tule Mine, Melchor Musquiz, Coahuila Mexico |
| those are fantastic looking specimens. thank you,
john |
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| Topic: Calcite with an interesting termination - from a parking lot |
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| gemlover Replies: 5 Views: 10384 |
Forum: Mines and Mineral Localities Posted: Jul 27, 2013 05:18 Subject: Re: Calcite with an interesting termination - from a parking lot |
| How about a "truncation?" | |
| Topic: Collection of John Atwell Rasmussen |
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| gemlover Replies: 1 Views: 7310 |
Forum: Collection photos and Collector's page Posted: Jul 23, 2013 14:24 Subject: Collection of John Atwell Rasmussen |
| Black Schorl Tourmaline crystals imbedded in feldspar matrix. Sample found in vicinity of Cherokee, NC | |
| Topic: Gold in Quartz |
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| gemlover Replies: 14 Views: 18286 |
Forum: Minerals and Mineralogy Posted: Jul 18, 2013 11:48 Subject: Re: Gold in Quartz |
| Nice one Ben, unfortunately, most assayers are not located in NC. You might be able to locate someone who could evaluate the commercial value of your ore. Check with one of your local geology depart ... | |
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