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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1477
Location: Cambridge
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 Posted: Jul 28, 2022 06:31 Post subject: Re: Minerals of the Rubtsovk Mine - Silvia's Collection |
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Does it do stacking? (with a compatible lens)
It says 'focus bracketing' - does that mean stacking?
| silvia wrote: | | A really lovely Azurite nodule from the Rubtsovsk mine. |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Jul 28, 2022 15:09 Post subject: Re: Minerals of the Rubtsovk Mine - Silvia's Collection |
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| James Catmur wrote: | Does it do stacking? (with a compatible lens)
It says 'focus bracketing' - does that mean stacking?
| silvia wrote: | | A really lovely Azurite nodule from the Rubtsovsk mine. |
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Hello James:
I do believe it does photo stacking. From what my partner and I have seen on several you tube videos the ‘focus bracketing function’ allows you to shift the focus from the near field to the far field. You can set the number of photos the camera can take but the camera will determine the total number needed to achieve focus. By this I mean if you set 50 shots the camera may stop after 15.
The feature may seem ‘gimmicky’ to some folks but it has a niche application in product photography, especially photographing minerals. It is for this reason, among others too, that our children bought the camera for us.
If you would like to see the real experts using focus bracketing I can send the links.
Our children (I have four – a daughter and three sons) decided to surprise my partner (their father) and I with a wonderful gift – a new camera. So we now have a brand new Canon EOS R6 Mark II with a really professional tripod and five new Lens kits. Though I liked the old Nikon Coolpix A100, our children always called it a toy camera. We are really excited about the new camera.
| Mineral: | - |
| Description: |
| LCD set up for focus bracketing |
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| Viewed: |
19908 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 02, 2022 18:31 Post subject: Cuprite - Minerals of the Rubtsovsk Mine - Silvia's Collection |
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A cluster of well-formed Cuprite crystals from the Rubtsovsk mine showing sharp edges with a pleasing metallic luster - hint of blue. The largest crystal is 22 mm on edge. In bright light some of the smaller crystals display deep red tones. If the crystals transmit red light, the reflected light occurs at the blue end of the spectrum – hence hints of blue.
Prior to photographing my partner and I washed the specimen as Cuprite from this locality seems to develop a very thin layer of what might be hydroxy-copper oxide.
| Mineral: | Cuprite |
| Locality: | | Rubtsovskoe Mine, Rubtsovsky District, Altai Krai, Russia |  |
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| Dimensions: | 60 mm x 50 mm x 30 mm |
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| Viewed: |
19694 Time(s) |
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| Mineral: | Cuprite |
| Locality: | | Rubtsovskoe Mine, Rubtsovsky District, Altai Krai, Russia | |
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| Dimensions: | 60 mm x 50 mm x 30 mm |
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| Viewed: |
19677 Time(s) |
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| Mineral: | Cuprite |
| Locality: | | Rubtsovskoe Mine, Rubtsovsky District, Altai Krai, Russia | |
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| Dimensions: | 60 mm x 50 mm x 30 mm |
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| Viewed: |
19683 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 09, 2022 16:13 Post subject: My Kidney - Silvia's Collection |
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I consider this specimen to be a shapely hematite "kidney ore" from Cumbria. I have not seen too many Kidney ore specimens from the Goose Green mine. Most come from the Florence mine, a locality that also produced excellent Baryte, Calcite, Dolomite, Fluorite and Quartz specimens. This Goose Green specimen has lustrous, rich deep-red ‘bubbly’ botryoids with a small quantity of specular hematite on the back of the specimen.
The photos were taken with the Canon EOS M6 Mark II. The lens used was the Canon EFM 28mm f/3.5 macro using the standard macro setting on the lens body (not super macro). The photos were processed using the Canon Digital Photo Professional V4 software. The depth compositing option was used. Some 20 photographs to be taken, focusing on various points of the specimen.
| Mineral: | Hematite |
| Locality: | | Goose Green Mine, Frizington, Arlecdon & Frizington, Copeland, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom | |
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| Dimensions: | 8 cm x 6 cm x 5 cm |
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| Viewed: |
19581 Time(s) |
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| Mineral: | Hematite |
| Locality: | | Goose Green Mine, Frizington, Arlecdon & Frizington, Copeland, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom | |
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| Dimensions: | 8 cm x 6 cm x 5 cm |
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19522 Time(s) |
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| Mineral: | Hematite |
| Locality: | | Goose Green Mine, Frizington, Arlecdon & Frizington, Copeland, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom | |
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| Dimensions: | 8 cm x 6 cm x 5 cm |
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| Internal structure of the botryoids |
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| Viewed: |
19550 Time(s) |
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| Mineral: | - |
| Description: |
| Lens used to take photos. |
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19545 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2250
Location: Oklahoma
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| Posted: Aug 09, 2022 16:51 Post subject: Re: Silvia's Collection |
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| Nice Hematite, Silvia, and excellent photo quality with the new camera.
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 09, 2022 18:47 Post subject: Re: Silvia's Collection |
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| Michael Shaw wrote: | | Nice Hematite, Silvia, and excellent photo quality with the new camera. |
We are really happy with the camera. It enables us to take really high resolution photos that can easily be printed, without loss of clarity, on A4 size glossy paper. Some might even be worth printing in poster size. The Nikon Coolpix A100 took some very nice photos, but on enlargement they looked too grainy for A4 size photos.
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 09, 2022 22:00 Post subject: KIDNEY LABEL - Silvia's Collection |
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label from famous British Collector and Dealer, Ralph Sutcliffe.
| Mineral: | - |
| Locality: | | Goose Green Mine, Frizington, Arlecdon & Frizington, Copeland, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom | |
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19489 Time(s) |
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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1477
Location: Cambridge
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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1477
Location: Cambridge
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| Posted: Aug 10, 2022 04:24 Post subject: Re: Minerals of the Rubtsovk Mine - Silvia's Collection |
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| Found a video about this stacking/bracketing and it does seem useful. 'Focus bracketing' was a new term to me. I use Canon but would need a new body and lens to use the feature.
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 10, 2022 17:43 Post subject: Re: Minerals of the Rubtsovk Mine - Silvia's Collection |
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| James Catmur wrote: | | Found a video about this stacking/bracketing and it does seem useful. 'Focus bracketing' was a new term to me. I use Canon but would need a new body and lens to use the feature |
Hello James:
Many thanks for the link.
At the moment we are still learning to use all the features of the camera. We have only experimented with the super macro function. For really close-up photos with magnification we use a digital microscope with a long focal length, and we stack the photos (anywhere from 20 to 100 shots per subject) with Helicon Focus. We consider it very important to have all aspects of the photo in focus – background, subject and foreground. It is for this reason that we avoid using a standard non-digital optical microscope – you can get some fantastic photos but the background is always out of focus.
Our children also included a focusing rail with the camera package gift, and I have included a photo. My partner is in the process of modifying and improving it, and he may also do a total rebuild or create a new component. He thinks the gear racks need replacing with better and smoother versions. He is also looking into a design using a micrometer to adjust the focus as this will enable much finer adjustment (0.1mm or less) when subjects are really close.
If it is fine we could include more photos of the development of our camera studio.
We are also very busy setting up a private Science Museum as we have thousands of pieces covering geology, mineralogy, mining and many other related fields. Our children say our home already looks like a museum so what is there to set up?
| Mineral: | - |
| Description: |
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| Viewed: |
19375 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 15, 2022 14:24 Post subject: Panasqueira minerals and panasqueira art - Silvia's Collection |
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We do not normally purchase thumbnail size mineral specimens, but my partner had ulterior motives – he intends to mount the piece in a 18K gold necklace for me. When complete I will upload a few photos of my new Panasqueira jewellery.
Despite its small size, it does contain some choice lustrous black crystals of Cassiterite to 15mm associated with minor Pyrite and minor Muscovite. Some of the Cassiterite crystals display internal red flashes. The specimen is in great condition – a fine thumbnail example from the famous Panasqueira mine – soon to be part of my jewellery collection.
| Mineral: | Cassiterite, Muscovite, Pyrite |
| Locality: | | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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| Dimensions: | 35 mm x 25 mm x 15 mm |
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| Viewed: |
18855 Time(s) |
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| Mineral: | Cassiterite, Muscovite, Pyrite |
| Locality: | | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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| Dimensions: | 35 mm x 25 mm x 15 mm |
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| Rear view - mounting to jewellery will be here. |
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| Viewed: |
18879 Time(s) |
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| Mineral: | Cassiterite, Muscovite, Pyrite |
| Locality: | | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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| Description: |
I was so impressed with the water color paintings I have seen that I was considering trying to paint too. My daughter told me that it is very easy to do this sort of work with software – ‘in silico’ – so no paints or brushes are needed. She is buying me some specialized software so that I can produce ‘in-silico’ water colour (and oil paintings too) renderings of my minerals with minimal effort. The renderings created by the software that I have seen so far are outstanding – the ‘in silico’ productions are really nice.
My first ‘in silico’ oil painting on ‘in-silico’ canvas. Perhaps not as good as an artist could do but it only took me 10 minutes. With the new software my daughter is purchasing, the results should be much better. When printed on high quality paper and appropriately framed, the result will look nice.
We are also looking at creating photos, posters, t-shirts, and perhaps having them screen-printed on quality canvas.
I will not put copyright restrictions on my productions – they are free to use for all non-commercial purposes provided full credit is given. We do not need the money – we enjoy doing it so all may benefit. |
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18844 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 18, 2022 13:37 Post subject: Malachite after Azurite (?) - Silvia's Collection |
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The sharp, tabular rhombohedral habit of the original Azurites has been preserved superbly by the Malachite, to the point that you can see each edge and variation in the original crystal. The Malachite has deep forest-green chatoyant luster (wet look in places) and color that is so aesthetic and desired.
| Mineral: | Malachite, Plancheite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | 120 mm x 90 mm x 45 mm |
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| Viewed: |
19236 Time(s) |
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| Mineral: | Malachite, Plancheite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | 120 mm x 90 mm x 45 mm |
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| Viewed: |
19216 Time(s) |
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| Mineral: | Malachite, Plancheite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | 120 mm x 90 mm x 45 mm |
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| Viewed: |
19195 Time(s) |
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| Mineral: | Malachite, Plancheite |
| Locality: | | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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| Dimensions: | 120 mm x 90 mm x 45 mm |
| Description: |
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| Viewed: |
19232 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 23, 2022 14:21 Post subject: From Poland with love - Silvia's Collection |
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Dozens of intergrown rosettes of orange-brown bladed Baryte aesthetically accented with a generous sprinkling of shiny pyrite micro crystals.
| Mineral: | Baryte with Pyrite |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Dimensions: | 120 mm x 80 mm x 80 mm |
| Description: |
| You do not see too many minerals from the very beautiful country of Poland, but I think those from Lubin are classics - enjoy. |
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| Viewed: |
19077 Time(s) |
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| Mineral: | Baryte with Pyrite |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Dimensions: | 120 mm x 80 mm x 80 mm |
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| Viewed: |
19058 Time(s) |
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| Mineral: | Baryte with Pyrite |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Dimensions: | 120 mm x 80 mm x 80 mm |
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| Viewed: |
19066 Time(s) |
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| Mineral: | Baryte with Pyrite |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Dimensions: | 120 mm x 80 mm x 80 mm |
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| Viewed: |
19115 Time(s) |
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| Mineral: | _ |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Description: |
| Pocket from which the specimen was extracted - Courtesy of KGHM. View about 1.5 metre. |
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| Viewed: |
19066 Time(s) |
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| Mineral: | - |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Aerial view of the mine and processing facility |
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| Viewed: |
19099 Time(s) |
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| Mineral: | - |
| Locality: | | Lubin Mine, Lubin, Lubin District, Legnica, Lower Silesia, Poland | |
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| Description: |
| Lubin Headframes - Courtesy of KGHM |
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| Viewed: |
19094 Time(s) |
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silvia
Joined: 10 Oct 2021
Posts: 259
Location: UK
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| Posted: Aug 29, 2022 13:12 Post subject: Minerals of Elba - Silvia's Collection |
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Large lustrous yellow-metallic Pyrite crystals to 60 mm surrounded by a crystallized mass of bladed black-metallic specular Hematite crystals to 10 mm.
I love the Hematite and Pyrite specimens from Elba. Elba is one of the most beautiful places on earth – a true gem in every essence of the word.
| Mineral: | Pyrite on Hematite |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Dimensions: | 14 cm x 12 cm x 9 cm |
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| Viewed: |
18859 Time(s) |
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| Mineral: | Pyrite on Hematite |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Dimensions: | 14 cm x 12 cm x 9 cm |
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| Viewed: |
18871 Time(s) |
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| Mineral: | Pyrite on Hematite |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Dimensions: | 14 cm x 12 cm x 9 cm |
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| Viewed: |
18871 Time(s) |
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| Mineral: | Pyrite on Hematite |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Dimensions: | 14 cm x 12 cm x 9 cm |
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| Viewed: |
18846 Time(s) |
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| Mineral: | - |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Description: |
| A map that was created in 2004 by my partner for a talk on Iron mines. |
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18870 Time(s) |
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| Mineral: | - |
| Locality: | | Rio Mine (Rio Marina Mine), Valle Giove stope, Rio Marina, Elba Island, Livorno Province, Tuscany, Italy | |
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| Description: |
| Aerial photograph of a section of the mine. The red circle marks the approximate location of the source of the specimen. It was uncovered during a specimen recovery program in 2006 organized by Frederico Pezzotta of the Museo di Milan. To aid in locating the ore-body the GPS coordinates have been provided. |
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18872 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Aug 30, 2022 06:18 Post subject: Re: Silvia's Collection |
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| A really superb classic pyrite from Elba, wonderful specimen!
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