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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 219 matches |
Author | Message |
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Topic: Kimberlite and Diamond? | |
Bob Carnein Replies: 7 Views: 1184 |
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: 681 |
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. | |
Topic: Fluorite locality | |
Bob Carnein Replies: 6 Views: 1486 |
Forum: What is it? - Where is it from? Posted: Feb 16, 2024 17:47 Subject: Re: Fluorite locality |
Elmwood, Smith Co., Tennessee. | |
Topic: Need help identifying | |
Bob Carnein Replies: 4 Views: 1353 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jan 19, 2024 10:29 Subject: Re: Need help identifying |
Besides the recommendations of others on the forum, I would suggest you find out whether there is a mineral club near your home and take a few things to their next meeting. Nothing beats having someb ... | |
Topic: Looking for help identifying rock samples | |
Bob Carnein Replies: 3 Views: 1107 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jan 17, 2024 10:32 Subject: Re: Looking for help identifying rock samples |
This rock appears to be a breccia made up of broken clasts cemented together by some secondary material. It could be volcanic--there are volcanic rocks south of Tripoli, in NW Libya, But that's prett ... | |
Topic: Unknown Macedonian Crystals Help ID! | |
Bob Carnein Replies: 10 Views: 3482 |
Forum: What is it? - Where is it from? Posted: Jan 14, 2024 11:19 Subject: Re: Unknown Macedonian Crystals Help ID! |
It's unfortunate that so many people wasted so much time on a post that didn't contain the basic information that we all need in order to help with identifying this stuff. | |
Topic: Rhodochrosite Locality near "Flagstone, CO" | |
Bob Carnein Replies: 4 Views: 2535 |
Forum: What is it? - Where is it from? Posted: Dec 28, 2023 15:07 Subject: Re: Rhodochrosite Locality near "Flagstone, CO" |
This looks like a piece from the Sunnyside mine group, Gladstone (not Flagstone), San Juan Co., CO | |
Topic: Best wishes / 2023-2024! | |
Bob Carnein Replies: 16 Views: 8136 |
Forum: Comments & Suggestions Posted: Dec 22, 2023 17:34 Subject: Re: Best wishes / 2023-2024! |
I like it!! And I'm glad AI has a sense of humor. | |
Topic: Fluorite Star | |
Bob Carnein Replies: 3 Views: 3204 |
Forum: Minerals and Mineralogy Posted: Nov 28, 2023 13:12 Subject: Re: Fluorite Star |
Roger, This doesn't answer your question, but I wondered whether this fluorite (like some of the purple fluorite from this locality) fluoresces red? | |
Topic: Minimum size for a mineral museum | |
Bob Carnein Replies: 11 Views: 10383 |
Forum: Off-Topic and Introductions Posted: Sep 10, 2023 10:31 Subject: Re: Minimum size for a mineral museum |
Although, for me, one specimen would not make a very interesting museum, I have to admit that smaller is sometimes better. I don't have the mental stamina to look at a thousand specimens, even if the ... | |
Topic: Minerals of the distant future | |
Bob Carnein Replies: 4 Views: 7452 |
Forum: Minerals and Mineralogy Posted: Aug 05, 2023 09:07 Subject: Re: Minerals of the distant future |
Maybe this is a philosophical issue, but I believe humanity is a natural and inevitable result of natural processes, and crystalline chemical compounds synthesized by humans qualify as minerals. The ... | |
Topic: Inclusions of spiral or helical growth and screw dislocations - (0) | |
Bob Carnein Replies: 49 Views: 144464 |
Forum: Featured Columns of FMF Posted: Jul 04, 2023 11:08 Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0) |
Those don't look at all like the structures in my topaz. I'll try to get a better photograph, but I admit that I'm challenged in that department. Here are a couple photos of the helical structure in ... | |
Topic: Inclusions of spiral or helical growth and screw dislocations - (0) | |
Bob Carnein Replies: 49 Views: 144464 |
Forum: Featured Columns of FMF Posted: Jul 04, 2023 09:06 Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0) |
Those don't look at all like the structures in my topaz. I'll try to get a better photograph, but I admit that I'm challenged in that department. | |
Topic: Inclusions of spiral or helical growth and screw dislocations - (0) | |
Bob Carnein Replies: 49 Views: 144464 |
Forum: Featured Columns of FMF Posted: Jul 03, 2023 11:09 Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0) |
Thanks to Mr. White for his comments. To me, growth dislocations produce what look like fractures--they even have conchoidal markings on their surfaces. Perhaps "fracture" is an inaccurate ... | |
Topic: Inclusions of spiral or helical growth and screw dislocations - (0) | |
Bob Carnein Replies: 49 Views: 144464 |
Forum: Featured Columns of FMF Posted: Jul 02, 2023 18:25 Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0) |
I recently purchased this specimen of topaz from the Shigar Valley, Gilgit-Baltistan, Pakistan. It has a helical fracture that can be seen clearly when viewed through one of the inclined prism faces ... | |
Topic: Need help - Portugal | |
Bob Carnein Replies: 4 Views: 7390 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Apr 30, 2023 18:20 Subject: Re: Need help - Portugal |
The first step in identifying any rock is to break it and expose a fresh surface. Then, unless it's very fine grained, try to identify the minerals it's made up of (it helps a lot to have a 10X magni ... | |
Topic: Problem with identification | |
Bob Carnein Replies: 6 Views: 5701 |
Forum: Minerals and Mineralogy Posted: Mar 29, 2023 10:17 Subject: Re: Problem with identification |
There appears to be a faint pleochroic halo around the crystal in your first photo. That also suggests zircon as a possibility. | |
Topic: Any chance of finding uranium ore in Southeastern USA? | |
Bob Carnein Replies: 5 Views: 14775 |
Forum: Rockhounding trips Posted: Mar 22, 2023 17:10 Subject: Re: Any chance of finding uranium ore in Southeastern USA? |
North Carolina may not count as "southeastern US", but check out Spruce Pine. | |
Topic: Diamond pseudomorphs after graphite | |
Bob Carnein Replies: 8 Views: 5448 |
Forum: Minerals and Mineralogy Posted: Feb 21, 2023 19:17 Subject: Re: Diamond pseudomorphs after graphite |
It seems there is not enough information to discuss this. | |
Topic: Galena Spinel law | |
Bob Carnein Replies: 8 Views: 6064 |
Forum: Minerals and Mineralogy Posted: Feb 12, 2023 17:18 Subject: Re: Galena Spinel law |
This doesn't look like the galena spinel twins I have in my collection, which are usually thin plates. I agree with Pete Richards--they appear to be cubes modified by octahedron faces. | |
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