|
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.
|
| Search found 232 matches |
| Author | Message |
|---|---|
 Topic: Greetings from Czech Republic |
|
| Bob Carnein Replies: 3 Views: 554 |
 Forum: Mines and Mineral Localities Posted: Dec 13, 2024 17:34 Subject: Re: Greetings from Czech Republic |
| It looks good enough to eat! | |
| Topic: I think this is Malachite after Barite? thoughts? |
|
| Bob Carnein Replies: 7 Views: 1303 |
Forum: Minerals and Mineralogy Posted: Dec 11, 2024 20:10 Subject: Re: I think this is Malachite after Barite? thoughts? |
| I agree. It looks more like malachite after azurite to me (but, admittedly, I don't remember seeing well developed dioptase with well developed azurite crystals). | |
| Topic: INTERMINERAL Liège 2024 |
|
| Bob Carnein Replies: 5 Views: 1795 |
Forum: Mineral Shows Posted: Nov 07, 2024 11:17 Subject: Re: INTERMINERAL Liège 2024 |
| From my experience, fluorite from the Sunnyside mine often occurs as big (as opposed to tiny on this piece) pale green crystals, and the rhodochrosite from there typically (though not always) has a mo ... | |
| Topic: Fluorite twin from Colorado |
|
| Bob Carnein Replies: 1 Views: 1934 |
Forum: Micros & Macros - Images of Minerals Posted: Aug 24, 2024 17:34 Subject: Fluorite twin from Colorado |
| A friend, who is a faceter, recently gave me this specimen from the south side of Mt. Antero, in the Sawatch Range of Colorado. The person who found it wanted him to cut gemstones from it (!!), but, ... | |
| Topic: Mineral question from a new user |
|
| Bob Carnein Replies: 1 Views: 1061 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Aug 11, 2024 09:25 Subject: Re: Mineral question from a new user |
| It would help to know the hardness and other physical properties. It looks wet; how does it look dry? To me, it looks like iron-stained quartz. | |
| Topic: Altered quartz or pseudomorph? |
|
| Bob Carnein Replies: 7 Views: 2962 |
Forum: What is it? - Where is it from? Posted: Jul 29, 2024 14:48 Subject: Re: Altered quartz or pseudomorph? |
| I'm having trouble seeing the angles you've measured on the pictures. In the second photo, the sample looks like a hexagonal prism with one side broken and a combination of a hexagonal prism and a ba ... | |
| Topic: Vorobyevite, a 7th variety of beryl |
|
| Bob Carnein Replies: 2 Views: 1666 |
Forum: Minerals and Mineralogy Posted: Jul 23, 2024 17:33 Subject: Re: Vorobyevite, a 7th variety of beryl |
| On Mindat, this is listed as not an approved mineral species. It seems to crop up periodically. I have a specimen and have labeled it "alkali beryl". Is this acceptable? | |
| Topic: Help me identify if this is real natural Congo citrine ? |
|
| Bob Carnein Replies: 3 Views: 1197 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jul 08, 2024 20:18 Subject: Re: Help me identify if this is real natural Congo citrine ? |
| This looks like the real thing. | |
| Topic: A lot of reports from Freiberg - thanks to Jolyon Ralph |
|
| Bob Carnein Replies: 2 Views: 1412 |
Forum: Freiberg Museums Posted: Jul 03, 2024 08:25 Subject: Re: A lot of reports from Freiberg - thanks to Jolyon Ralph |
| These links are well worth the time to look. There are some truly great things. Thanks. | |
| Topic: Is this dolomite-pyrite-siderite? |
|
| Bob Carnein Replies: 6 Views: 2045 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: May 27, 2024 19:06 Subject: Re: Is this dolomite-pyrite-siderite? |
| Probably muscovite. It would help if you would clean it up. | |
| Topic: Provide Miller indices in practice please |
|
| Bob Carnein Replies: 11 Views: 3492 |
Forum: Minerals and Mineralogy Posted: May 23, 2024 16:25 Subject: Re: Provide Miller indices in practice please |
| Robson: I think you get the point. Yes, it would be helpful if you post a photograph of your crystal. It would also be helpful to break the crystal, but I'm sure you won't want to do that!!
Anoth ... |
|
| Topic: Provide Miller indices in practice please |
|
| Bob Carnein Replies: 11 Views: 3492 |
Forum: Minerals and Mineralogy Posted: May 22, 2024 10:21 Subject: Re: Provide Miller indices in practice please |
| Miller indices are just a "shorthand" way to describe features of crystals. Rather than saying that topaz has a single perfect cleavage direction that is perpendicular to the c axis, it's f ... | |
| Topic: Mineral identification tips |
|
| Bob Carnein Replies: 9 Views: 2854 |
Forum: Minerals and Mineralogy Posted: May 16, 2024 17:12 Subject: Re: Mineral identification tips |
| Whether it's necessary to learn about crystallography depends on how serious you are about adding to your identification skills and whether you care about the "whys" of many mineral properti ... | |
| Topic: Kimberlite and Diamond? |
|
| Bob Carnein Replies: 7 Views: 3895 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Apr 06, 2024 10:19 Subject: Re: Kimberlite and Diamond? |
| Roger, That looks too good to be natural. Am I wrong? It would be interesting to know many carats per ton? | |
| Topic: Identification question |
|
| Bob Carnein Replies: 4 Views: 2922 |
Forum: What is it? - Where is it from? Posted: Mar 29, 2024 09:31 Subject: Re: Identification question |
| The photo is a bit unclear, but it looks to me like iron-oxide staining on quartz. Staurolite usually occurs as well formed crystals (porphyroblasts) rather than irregular masses. | |
All times are GMT - 5 Hours |
FAQ 
Register
Log in
Forgotten your password?
