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Search found 66 matches |
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Paul S Replies: 24 Views: 86922 |
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Thanks for the update Alfredo, I should have checked those sources myself, but you have been very helpfull.
I can finally put this mistery behind me (as I'm not really interested in the possible pr ... |
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Paul S Replies: 24 Views: 86922 |
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Sadly I have not found any new information on these crystals. They do not compare well to synthetic, nor natural crystals, but I'm not an expert of course.
If anyone has more information, please sh ... |
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Paul S Replies: 0 Views: 8724 |
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I'm going on a trip to the Black Forest (Schwarzwald) and Swabian Alb (Schwäbische Alb) and I was wondering if anyone could give me some information for finding minerals in those regions.
I have ch ... |
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Paul S Replies: 4 Views: 28457 |
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I know all about making these crystals, I do it myself all the time! It's a lovely way to spend your time and the results are always different, but beautiful!
These egg-shaped crystals are indeed m ... |
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Paul S Replies: 4 Views: 10096 |
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Thank you for your input Gail and Arturo. I agree that because it is my collection, I should decide on how to manage them all.
I'm planning on expanding all of these collections, and there are alre ... |
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Paul S Replies: 4 Views: 10096 |
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I have been thinking about how I could manage my collections in the best way and I was wondering what your input would be. The problem is that I want to properly manage my collections, with numbering, ... | |
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Paul S Replies: 8 Views: 20698 |
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I posted my stabilization system here: https://www.mineral-forum.com/message-board/viewtopic.php?t=1150
I made it myself and it's easy in use. Pete also posted his system there with the seperate p ... |
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Paul S Replies: 11 Views: 20615 |
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`I have been able to export my list from my database and it now counts 4391, mostly IMA approved, mineral species. It's not a perfect list, there will be many errors in it and the notation of the chem ... | |
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Paul S Replies: 11 Views: 20615 |
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I have been in the same situation as TheBrickPrinter, but I managed to implement a rather complete list of mineral species into my Access database. I used the list from Webminerals and removed almost ... | |
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Paul S Replies: 31 Views: 84535 |
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Those are all very nice examples of pleochroism, well done and thank you everyone!
I am fascinated by the tanzanite from amethystguy, I have never read or heard about 4 colours, can you explain how ... |
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Paul S Replies: 16 Views: 23616 |
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I think we can all agree that a certain amount of destruction is needed to get our hands on minerals. Just like you need to break an egg to bake an omelet ;-)
But what about mining conditions? The ... |
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Paul S Replies: 16 Views: 23616 |
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After having seen a documentary about illegal gold mining in the jungles of Brazil, I started wondering about the ethics surrounding mining for minerals in general. I'm not talking about the mining fo ... | |
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Paul S Replies: 11 Views: 31653 |
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I'm here with an update, for this week I had some time to make a nice stand for the goose-neck lights. The photo below will explain most of it, but there are some details that might need some extra cl ... | |
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Paul S Replies: 31 Views: 84535 |
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These are some very nice examples, and I can verify that amethyst shows pleochroism. It is hard to spot though and only a few crystals in a cluster might show it. It's possible that thin slices show t ... | |
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Paul S Replies: 31 Views: 84535 |
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You are absolutely right that pleochroism only requires one filter instead of two. I have used a single filter for studying the minerals, but the system I build can contain both filters to observe the ... | |
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