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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 65 matches |
| Author | Message |
|---|---|
 Topic: Slice Schalenblende |
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| Mathias Replies: 4 Views: 1481 |
 Forum: Conserving, Preparing and Cleaning Minerals Posted: Jul 11, 2025 14:14 Subject: Re: Slice Schalenblende |
| Hi everyone,
I found someone nearby—about 60 km from home—who cuts agates using a diamond saw with cooling oil. Cutting the Schalenblende went well, and here are the results. I gave one good slice ... |
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| Topic: Tourmaline Namibia? |
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| Mathias Replies: 4 Views: 1303 |
Forum: What is it? - Where is it from? Posted: Jun 06, 2025 06:21 Subject: Tourmaline Namibia? |
| At a small mineral show, a small piece caught my attention. It was labeled: 'Tourmaline Namibia.' I couldn't find any similar pieces on Mindat. Is there anyone who recognizes this and perhaps knows mo ... | |
| Topic: Slice Schalenblende |
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| Mathias Replies: 4 Views: 1481 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jun 06, 2025 06:03 Subject: Re: Slice Schalenblende |
| Steve, James, thanks for your help. I attended a local mineral fair last Sunday in Schwalmtal, Germany, about 30 km from where I live. There was a vendor selling agate, and I took his business card an ... | |
| Topic: Slice Schalenblende |
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| Mathias Replies: 4 Views: 1481 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: May 29, 2025 11:03 Subject: Slice Schalenblende |
| Hi, I've acquired a large and old lump of Schalenblende from the Plobieres/Vieille Montagne region in Belgium. I want to have it cut in slices. The peice is rather large, around 12 kg, 18×15×15 cm. Do ... | |
| Topic: Unknown banded mineral from shores of lake Buttermere, Cumbria. UK |
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| Mathias Replies: 5 Views: 2804 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 07, 2025 11:19 Subject: Re: Unknown banded mineral from shores of lake Buttermere, Cumbria. UK |
| It's Pyknite. | |
| Topic: Verdelite & Quartz ? |
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| Mathias Replies: 6 Views: 3761 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Sep 22, 2024 09:45 Subject: Re: Verdelite & Quartz ? |
| Hi Tobi thanks, this indeed seems plausible.
I wonder how this happens, from the inside to the outside it pseudomorphs into Quartz, as it seems. What would be the mechanism behind this metamorphosis? ... |
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| Topic: Verdelite & Quartz ? |
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| Mathias Replies: 6 Views: 3761 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Sep 22, 2024 06:16 Subject: Verdelite & Quartz ? |
| Some time ago I've purchased a specimen with the label:
Verdelite & Quartz, Taquaral, Minas Gerais. It is like a large green Verdelite crystal but the inside of it completely consists of presum ... |
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| Topic: Fluorite |
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| Mathias Replies: 4 Views: 8155 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 06, 2023 05:06 Subject: Re: Fluorite |
| Hi, yes, I fully agree, its a super nice show, with many local vendors, most of them from within radius of 250 km. I've seen the Mario Pauwels show, there are absolute top quality specimen among them ... | |
| Topic: Fluorite |
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| Mathias Replies: 4 Views: 8155 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Mar 05, 2023 10:50 Subject: Fluorite |
| Dear All,
Today I visited a mineral exchange in Belgium, Hannut, a 90-minute drive from my home. I bought a Fluorite specimen from vendors who had most of their specimens packed in newspapers from ... |
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| Topic: Amethyst |
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| Mathias Replies: 17 Views: 14531 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 25, 2023 13:40 Subject: Re: Amethyst |
| Hi here are some photos from the other specimen (I bought 2). | |
| Topic: Amethyst |
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| Mathias Replies: 17 Views: 14531 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 25, 2023 12:18 Subject: Re: Amethyst |
| I see Fluorite cubes. Could you test the hardness?
Hi indeed it looks like cubes, but they aren't cubes. It is without doubt amethyst. There are a few small damages on some crystals and they are ... |
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| Topic: Amethyst |
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| Mathias Replies: 17 Views: 14531 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 25, 2023 07:04 Subject: Amethyst |
| Hi all,
I've purchased 2 Amethyst specimen recently. They have strange crystallization unusual in fact. The vendor said he purchased a box of these amethysts and due to bad packing, most were damaged ... |
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| Topic: Semi-spherical exterior, radiating interior stone |
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| Mathias Replies: 31 Views: 23714 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 11, 2023 00:09 Subject: Re: Semi-spherical exterior, radiating interior stone |
| Hi doesn't this fossil shelll look similar? | |
| Topic: Semi-spherical exterior, radiating interior stone |
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| Mathias Replies: 31 Views: 23714 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 10, 2023 11:38 Subject: Re: Semi-spherical exterior, radiating interior stone |
| Its a fossil shell.
Dohmophyllum involutum, Columnariina. With google its easy to find similar photos. |
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| Topic: Datolite locality question |
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| Mathias Replies: 9 Views: 9032 |
Forum: What is it? - Where is it from? Posted: Aug 05, 2022 14:50 Subject: Re: Datolite locality question |
| Hi, I did an analysis, it is Calcite indeed. Nice pink color in UV light.
That's totally OK with me, I could have done this "research" before asking FMF, but I guess the specimen resembles ... |
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