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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 32 matches |
| Author | Message |
|---|---|
 Topic: Was wondering what this geode was. |
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| Tom Tucker Replies: 20 Views: 23128 |
 Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jan 12, 2020 09:51 Subject: Re: Was wondering what this geode was. |
| Brandon, your specimens certainly look like the mineral calcite, but I don't think they have any thing to do with caves or speleothems. More likely they were formed as nodules or concretions , or dar ... | |
| Topic: Aragonite "buttons" |
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| Tom Tucker Replies: 6 Views: 10608 |
Forum: What is it? - Where is it from? Posted: Dec 10, 2019 19:20 Subject: Re: Aragonite "buttons" |
| Pete, those aragonite crystals are from a locality now in the Big Horn National Recreation Area - easy to access, easy to collect, but forbidden those days. I collected mine about 30 years ago, when, ... | |
| Topic: Is there any way to tell if the Elmwood Calcite i bought is TRULY from Elmwood Mine? |
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| Tom Tucker Replies: 16 Views: 23985 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 10, 2019 15:20 Subject: Re: is there any way to tell if the elmwood calcite i bought is TRULY from elmwood mine? |
| I don't believe Red Cliff, Gallatin County, Montana calcite crystals are ever that large. They are often seriously weathered, and then then collector- enhanced with HCl. | |
| Topic: Collection Macros |
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| Tom Tucker Replies: 31 Views: 48288 |
Forum: Micros & Macros - Images of Minerals Posted: Aug 05, 2018 19:02 Subject: Re: Collection Macros |
| Oliver, do a web search for the Columbus Gem and Mineral Society. I'm sure you'll meet other collectors who will help you with your collecting and identification of your minerals. Tom | |
| Topic: Collection Macros |
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| Tom Tucker Replies: 31 Views: 48288 |
Forum: Micros & Macros - Images of Minerals Posted: Aug 05, 2018 17:01 Subject: Re: Collection Macros |
| Your three newly posted photos show calcite only. Tom | |
| Topic: Collection Macros |
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| Tom Tucker Replies: 31 Views: 48288 |
Forum: Micros & Macros - Images of Minerals Posted: Aug 05, 2018 13:56 Subject: Re: Collection Macros |
| I think the crystals in "the glossy area" are calcite that has been actively dissolved by the HCl. I don't see any fluorite. Tom | |
| Topic: Montroydite from Terlingua, Texas |
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| Tom Tucker Replies: 10 Views: 17828 |
Forum: Minerals and Mineralogy Posted: Feb 02, 2017 17:45 Subject: Montroydite from Terlingua, Texas |
| Jordi queried if my red cinnabar crystals might have been montroydite. I'm sure they're not, but we did see some apparent montroydite on one collecting trip.
An old college friend had been visiti ... |
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| Topic: Light sensitivity of cinnabar crystals (Chatian Mine, China)? |
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| Tom Tucker Replies: 16 Views: 23373 |
Forum: Minerals and Mineralogy Posted: Feb 02, 2017 16:47 Subject: Re: Light sensitivity of cinnabar crystals (Chatian Mine, China)? |
| Jordi, hope you're enjoying Tucson. I'm certain the little Terlingua crystals are cinnabar. Comanchieite would be tetragonal, and these are definite rhombohedrons, like little red calcite crystals w ... | |
| Topic: Light sensitivity of cinnabar crystals (Chatian Mine, China)? |
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| Tom Tucker Replies: 16 Views: 23373 |
Forum: Minerals and Mineralogy Posted: Feb 02, 2017 10:21 Subject: Re: Light sensitivity of cinnabar crystals (Chatian Mine, China)? |
| I have collected red cinnabar rhombohedral crystals from an open, south facing-exposed surface near Terlingua, Texas that must have been exposed to the southern Sun for decades, and they remain red, e ... | |
| Topic: Mineralogy by Dexter Perkins |
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| Tom Tucker Replies: 14 Views: 39547 |
Forum: Mineralogical Literature Posted: Dec 24, 2016 15:57 Subject: Re: Mineralogy by Dexter Perkins |
| Tom, a web search should turn up some site which presents printable sheets of models of various crystal classes. So if you print, cut and paste you'll have useable models, at least for a start. Tom | |
| Topic: Could this be a very rare limestone shatter cone from the UK? |
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| Tom Tucker Replies: 18 Views: 33176 |
Forum: Minerals and Mineralogy Posted: May 12, 2016 00:12 Subject: Re: Could this be a very rare limestone shatter cone from the UK? |
| I've seen a number of shatter cones from "impact structures" in Missouri. Your sample looks nothing like them, but rather appears to be a broken section of a radiating pyrite nodule or conc ... | |
| Topic: Pronunciation of mineral names |
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| Tom Tucker Replies: 18 Views: 24580 |
Forum: Off-Topic and Introductions Posted: Mar 03, 2016 18:09 Subject: Re: Pronunciation of mineral names |
| The website, webmineral, has audio pronunciations of many species. | |
| Topic: Microscopes for micromounts |
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| Tom Tucker Replies: 7 Views: 11788 |
Forum: Off-Topic and Introductions Posted: Feb 21, 2016 16:02 Subject: Re: Microscopes for micromounts |
| Tom, search for Absolute Clarity and Calibration website - a former micro mounter. There are a couple of tabs for pages on "microscope dos and don'ts", and "microscopes to choose and a ... | |
| Topic: Italian Anatase |
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| Tom Tucker Replies: 5 Views: 17069 |
Forum: Micros & Macros - Images of Minerals Posted: Nov 15, 2014 08:21 Subject: Re: Italian Anatase |
| What is the locality in Italy ? | |
| Topic: Natrolite plus what? From South Island, New Zealand |
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| Tom Tucker Replies: 12 Views: 18285 |
Forum: Minerals and Mineralogy Posted: Apr 30, 2014 16:47 Subject: Re: Natrolite plus what? From South Island, New Zealand |
| Micro Baryte crystals are not uncommon with the zeolites, including analcime, chabazite, mesolite and harmotome, in the basalt at Sugar Grove, West Virginia | |
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