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Newest topics and users posts
24 Feb-09:30:59 Re: collection of michael shaw - clara mine (Michael Shaw)
23 Feb-14:45:25 Re: don lum collection (Don Lum)
23 Feb-07:33:22 Re: collection of volkmar stingl (Volkmar Stingl)
23 Feb-07:04:32 Re: collection of volkmar stingl (Carles Millan)
23 Feb-05:35:09 Re: collection of enrique llorens (Enrique Llorens)
23 Feb-05:23:35 Re: collection of volkmar stingl (Volkmar Stingl)
22 Feb-04:48:15 The mizunaka collection - quartz (Am Mizunaka)
22 Feb-00:28:51 Re: don lum collection (Don Lum)
21 Feb-10:24:36 Re: the mim museum in beirut, lebanon (Mim Museum)
21 Feb-09:21:50 Re: collection of michael shaw (Michael Shaw)
20 Feb-20:24:24 The mizunaka collection - fluorite (Am Mizunaka)
20 Feb-07:10:57 Collection of carles millan: calcite from elmwood (Carles Millan)
19 Feb-23:17:24 Re: collection of volkmar stingl (Volkmar Stingl)
19 Feb-23:12:03 Re: don lum collection (Don Lum)
19 Feb-08:04:24 Re: collection of michael shaw (Michael Shaw)
19 Feb-01:36:00 The mizunaka collection - quartz (Am Mizunaka)
19 Feb-00:07:09 Re: collection of volkmar stingl (Volkmar Stingl)
18 Feb-14:54:23 Re: don lum collection (Don Lum)
18 Feb-07:40:01 Re: collection of enrique llorens (Enrique Llorens)
18 Feb-07:37:31 Re: fluorite locality (Jordi Fabre)
18 Feb-04:24:51 Re: tucson 2024 - it's started! (Fiebre Verde)
17 Feb-22:18:27 Re: the mizunaka collection - gold (Am Mizunaka)
17 Feb-17:36:33 Re: tucson 2024 - it's started! (Bergur_e_sigurdarson)
17 Feb-16:00:58 Re: collection of enrique llorens (Carles Millan)
17 Feb-15:31:02 Re: collection of enrique llorens (Enrique Llorens)

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  Topic: Minimum size for a mineral museum
Forrestblyth

Replies: 11
Views: 9225

PostForum: Off-Topic and Introductions   Posted: Sep 08, 2023 13:16   Subject: Re: Minimum size for a mineral museum
Allowing us to handle a magnificent 70kg Weardale fluorite
  Topic: Minimum size for a mineral museum
Forrestblyth

Replies: 11
Views: 9225

PostForum: Off-Topic and Introductions   Posted: Sep 08, 2023 13:10   Subject: Re: Minimum size for a mineral museum
Small mineral museums work very well if focused on something special.
Take the small Weardale museum I visited today.

It has a small high quality selection of particular minerals specific to its ...
  Topic: Castleton, Derbyshire
Forrestblyth

Replies: 4
Views: 5233

PostForum: Mines and Mineral Localities   Posted: Aug 29, 2023 14:40   Subject: Re: Castleton, Derbyshire
Hi James, Derbyshire is truly the king of fluorite variety. your specimens show some fine zoning and colour variation from this area.

one location that less than 60 minutes drive from Castleton cal ...
  Topic: Castleton, Derbyshire
Forrestblyth

Replies: 4
Views: 5233

PostForum: Mines and Mineral Localities   Posted: Aug 29, 2023 10:49   Subject: Re: Castleton, Derbyshire
It is a very fossilized area. I was very surprised to see the thick beds of spirifer bivalve and crinoid death beds. I was more focused on the minerals and didn't look too hard for more desirable subj ...
  Topic: Castleton, Derbyshire
Forrestblyth

Replies: 4
Views: 5233

PostForum: Mines and Mineral Localities   Posted: Aug 28, 2023 14:35   Subject: Castleton, Derbyshire
Some of the many interesting minerals in Castleton, Derbyshire UK

Including the incredible local specific fluorite "Blue John"
  Topic: Silvia's Collection
Forrestblyth

Replies: 220
Views: 146771

PostForum: Women's Private Collections   Posted: Aug 02, 2023 08:37   Subject: Re: Silvia's Collection
Fantastic results. Very cleverly thought out techniques
  Topic: Isle of Skye collection. First baby steps with super macro
Forrestblyth

Replies: 11
Views: 13046

PostForum: Micros & Macros - Images of Minerals   Posted: Jul 27, 2023 11:39   Subject: Re: Isle of Skye collection. First baby steps with super macro
I suggest you need some form of linear motor that holds the camera firm and provides steady, slow movement, not a field I have worked in for 35 years. I can guess what they are doing but hope they can ...
  Topic: Isle of Skye collection. First baby steps with super macro
Forrestblyth

Replies: 11
Views: 13046

PostForum: Micros & Macros - Images of Minerals   Posted: Jul 27, 2023 07:48   Subject: Re: Isle of Skye collection. First baby steps with super macro
Thanks for all the helpful comments guys. I have learned a lot to think about.

I had never even considered the high-definition video combined with stacking. I suppose the clever stacking software d ...
  Topic: Isle of Skye collection. First baby steps with super macro
Forrestblyth

Replies: 11
Views: 13046

PostForum: Micros & Macros - Images of Minerals   Posted: Jul 24, 2023 11:11   Subject: Re: Isle of Skye collection. First baby steps with super macro
Movo reversing ring
  Topic: Isle of Skye collection. First baby steps with super macro
Forrestblyth

Replies: 11
Views: 13046

PostForum: Micros & Macros - Images of Minerals   Posted: Jul 24, 2023 10:39   Subject: Isle of Skye collection. First baby steps with super macro
I was fortunate enough to obtain a small high-end collection of specimens suitable for my first try at a few close-up shots.
I was so impressed with the beautiful images you guys displayed I was det ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Dec 21, 2022 06:06   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
Calcite also fluoresces red so that is not an good way to distinguish it from feldspar. To rephrase what others have said above: consider cleavage, reaction with acid, and hardness to distinguish the ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Dec 19, 2022 12:51   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
I know no geology, but was first put of mind that the pink veins might be feldspar, which according to this report is present.
I think that is a very good prospect. The hardness of about 6 would acco ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Nov 16, 2022 17:26   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
This is some information from a paper on this area. i don't understand a lot of it lol but it may give a hint to the unknown material.

The lavas of St Abb's Head are generally andesitic, but the co ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Nov 16, 2022 17:08   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
This is some of the interesting Andesite lava flow that push up through the greywackes. You can easily still see the sticky flow folds in the material. I sometimes see a small amount of the vein in th ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Nov 16, 2022 16:48   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
It appears to have rhombohedral cleavage, which suggests calcite. Is the host rock metamorphic?

It is sedimentary but is classed as borderline metamorphic.There are also loads of volcanic rock adj ...
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Nov 16, 2022 13:38   Subject: Re: Silurian greywackes on the Berwickshire coast Scotland
Its not as hard as quartz.

I sometimes find it with the odd vein of creamy white calcite ? next to it. i will try to find a photo of it. This might even be the same material in a larger form ?
  Topic: Silurian greywackes on the Berwickshire coast Scotland
Forrestblyth

Replies: 13
Views: 14505

PostForum: Mines and Mineral Localities   Posted: Nov 16, 2022 09:10   Subject: Silurian greywackes on the Berwickshire coast Scotland
In macro the Silurian greywackes are about as interesting as cement! But in pano they are magnificent. From Eyemouth to Siccar point the geology is stunning.

It is no wonder Hutton looked at these ...
  Topic: Money talks, especially in the hobby of mineral collecting
Forrestblyth

Replies: 24
Views: 11559

PostForum: Off-Topic and Introductions   Posted: Oct 30, 2022 06:08   Subject: Re: Money talks, especially in the hobby of mineral collecting
I have enjoyed the posting about value aspect in collecting and would also love to add another perspective. A shout out for the penniless collector lol.

I think you are missing a real treat if yo ...
  Topic: Carrock Mine, Mungrisdale, Eden, Cumbria, England
Forrestblyth

Replies: 3
Views: 9600

PostForum: Rockhounding trips   Posted: Sep 29, 2022 11:35   Subject: Re: Carrock Mine, Mungrisdale, Eden, Cumbria, England
I really enjoy finding and seeing these old workings. It's interesting to imagine the travels at those times, to and from for product, people, and other materials.

Thanks,
Bob

At the time of bo ...
  Topic: Baryte
Forrestblyth

Replies: 4
Views: 10416

PostForum: Rockhounding trips   Posted: Sep 29, 2022 11:26   Subject: Re: Baryte
Thanks for the views from the field. It's great to see such.

In the location its a magical place. The view and topography on the approach to the mine is spectacular. The mineral content of the spoi ...
 
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