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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1471
Location: Catalonia
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Posted: Apr 21, 2012 13:48 Post subject: Re: Collection of Nurbo |
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nurbo wrote: | Im not sure if this is allowed but Ill do it anyway ....... |
In fact ice is a mineral species like any other. A grandfathered one according to the IMA list ( https://pubsites.uws.edu.au/ima-cnmnc/MINERALlist.pdf ). Although it is difficult to imagine a collector with a showcase full of ice crystals at home, unless he/she lives in an igloo in the Antarctica, or on a moon of Jupiter. Who knows?
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Apr 22, 2012 02:28 Post subject: Re: Collection of Nurbo |
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:-)
But Carles is absolutely right: Ice, eventhough it is only crystalline at low temperatures, IS a mineral - if a mineral is a solid, anorganic chemical compound with a certain chemical composition and a crystalline structure (and i think this is the definition). The fact that ii melts when the temperature is above 0°C does not exclude it from the minerals: Just think of mercury which is also liquid at "normal" temperatures. And finally, every mineral has a temperature where it melts. Some need thousands of °C, ice needs some less ;-)
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Apr 23, 2012 02:02 Post subject: Re: Collection of Nurbo |
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Having read what Carles and Tobias wrote I had a bit of a google around and found this
https://emu.arsusda.gov/snowsite/default.html
(link normalized by FMF)
lots of Low Temperature SEM photos of snow, I never realised there was so much variation, I especially liked the photos of Martian CO2 ice.
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Riccardo Modanesi
Joined: 07 Nov 2011
Posts: 618
Location: Milano
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Posted: Apr 23, 2012 07:55 Post subject: Re: Collection of Nurbo |
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Hi to everybody!
I think there is nothing to discuss: if you read the "Glossary of Mineral Species" (you all should know what I'm talking about, I don't quote the author and the editing firm otherwise it seems to be an advertisement), the name "Ice" is reported with its chemical formula (H2O) and the crystal system (hexagonal).
Therefore our friend Nurbo DID photograph minerals when photographing ice crystals! And personally I liked those photos.
Greetings from Italy by Riccardo.
_________________ Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo. |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1471
Location: Catalonia
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Posted: Apr 23, 2012 11:13 Post subject: Re: Collection of Nurbo |
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Riccardo Modanesi wrote: | I think there is nothing to discuss |
Hi Riccardo !
Nobody discussed such thing. As you can read above, even the IMA considers officially that ice is a mineral species. But it is not one of my favorites so I'm not going to spend my hard earned money to purchase a good specimen and keep it in my showcases.
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Apr 23, 2012 12:09 Post subject: Re: Collection of Nurbo |
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Maybe there is a business opportunity here for some industrious forum member, building refrigerated display cabinets to keep Ice crystals in.
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1471
Location: Catalonia
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Posted: Apr 23, 2012 12:35 Post subject: Re: Collection of Nurbo |
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nurbo wrote: | Maybe there is a business opportunity here for some industrious forum member, building refrigerated display cabinets to keep Ice crystals in. |
And for some smart dealers to put the crystals on sale, either on matrix or without.
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Riccardo Modanesi
Joined: 07 Nov 2011
Posts: 618
Location: Milano
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Posted: Apr 24, 2012 12:41 Post subject: Re: Collection of Nurbo |
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Hi Carles and hi to everybody!
Ok it's not worthy to spend money and time for purchasing an ice crystal, but it is worthy to take a picture of it as Nurbo did. And moreover we are this way sure it will never ever melt! Hahahaha!!!
Greetings from Italy by Riccardo.
Carles Millan wrote: | Riccardo Modanesi wrote: | I think there is nothing to discuss |
Hi Riccardo !
Nobody discussed such thing. As you can read above, even the IMA considers officially that ice is a mineral species. But it is not one of my favorites so I'm not going to spend my hard earned money to purchase a good specimen and keep it in my showcases. |
_________________ Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo. |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 11, 2012 15:04 Post subject: Re: Collection of Nurbo |
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Some more from my collection, firstly my current favourite Kidney Ore, what can I say? its a stunner, from the Frizington Parks mine workings, so it could be from the New Parkside Mine, like many of the West Cumberland Iron Ore Field localities, they link up underground and the given localities are merely the mine entrance they came out of,.these places were like Swiss cheese, holes everywhere and many of them connected to each other, the miners would gather specimens wherever they thought they could make a Quid and label them from the mine they worked at, rather than the mine they had pinched them from. (Sorry Louis :-) )
On the subject of Swiss Cheese the second photo is of a Malachite blob on an undefined matrix from a mine near to Barras End in North Yorkshire, this area has so many mines in such a small area Id say its impossible to be totally accurate as to which specific mine this piece came from, they all worked the same ore body so it doesnt really matter.
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Hematite (var Kidney Ore) Frizington Parks / New Parkside mine, Frizington, Cumbria 75 x 65 mm |
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Hematite (var Kidney Ore) Frizington Parks / New Parkside mine, Frizington, Cumbria 50 x 40 mm |
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Malachite on ? Near Barras End, Melbecks Moor, North Yorkshire. 30 x 40 mm |
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Malachite on ? Near Barras End, Melbecks Moor, North Yorkshire. 10 x 7 mm |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 18, 2012 01:50 Post subject: Re: Collection of Nurbo |
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Today I thought Id post this piece from the Keswick Mining Museum.
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Plumbogummite, Malachite, Chrysocolla, Pyromorphite Roughton Gill, Caldbeck Fells, Cumbria. 80 x 50 x 30 mm |
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33699 Time(s) |
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Plumbogummite, Malachite, Chrysocolla, Pyromorphite Roughton Gill, Caldbeck Fells, Cumbria. 80 x 50 x 30 mm |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 22, 2012 15:07 Post subject: Re: Collection of Nurbo |
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Just got a good UK piece from Bay Minerals ex Max Freier, a rare piece indeed, Sphalerite from the Carrock mine in the Caldbeck Fells.
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Sphalerite Carrock Mine, Mungrisedale, Caldbeck Fells, Cumbria. 60 x 40 mm approx |
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Sphalerite Carrock Mine, Mungrisedale, Caldbeck Fells, Cumbria. FOV 10 x 10 mm approx |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 24, 2012 22:32 Post subject: Re: Collection of Nurbo |
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The Mourne Mountains in Co Down is the locality for this perfect 10 mm double terminated Topaz crystal, also present are Biotite Mice, Smoky Quartz and Orthoclase.
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Topaz, Smoky Quartz, Biotite, Feldspar Diamond Rocks, Mourne Mountains, Co Down, Northern Ireland. Topaz approx 10 mm |
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33634 Time(s) |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 27, 2012 14:53 Post subject: Re: Collection of Nurbo |
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One thing that never ceases to amaze me is just how wierd the Quartz can be from the Cumberland Iron Ore Fields!! This particular sample is from the Frizington Parks/New Parkside mine area. I always wonder why the Quartz in these pieces is so unusual, its such a strange blend of forms. Some of the crystals are skeletal whilst others are kind of platy and elsewhere you will find normal Cumberland habit crystals, but all in vugs on the same piece of matrix, its unusual stuff indeed. If anyones got any knowledge of why the Quartz in this area sometimes looks like this Id be really interested to know..
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Quartz Frizington Parks/New Parkside area FOV 30 mm across |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: May 27, 2012 15:19 Post subject: Re: Collection of Nurbo |
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Just thought Id mention the Quartz in the photo I just posted is absolutely undamaged in any way, it is totally pristine, though in places it looks wrecked,
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jun 14, 2012 15:56 Post subject: Re: Collection of Nurbo |
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Here are the photos of the piece from the "A Short Question on Epitaxy" thread, as I said Im not sure this is epitaxy, in fact it probably isnt, but the idea of similarly structured minerals in epitaxial formation is one Im still not completely sure I understand, but then there is much I dont understand about minerals and probably never will, otherwise mineral collecting would be boring.. Whatever it is, its a great example of some the minerals which form at that great man made scar on the planet that is Pike Law.
Galena corroding to Cerussite with Siderite on Fluorite, Pike Law Hushes, Teesdale, Co Durham, UK.
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Fluorite, Galena, Cerussite, Siderite. Pike Law Hushes, Teesdale, Durham Co., UK. cube approx 4mm across |
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Fluorite, Galena, Cerussite, Siderite. Pike Law Hushes, Teesdale, Durham Co., UK. cube approx 4mm across |
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Fluorite, Galena, Cerussite, Siderite. Pike Law Hushes, Teesdale, Durham Co., UK. cube approx 4mm across |
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33145 Time(s) |
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Fluorite, Galena, Cerussite, Siderite. Pike Law Hushes, Teesdale, Durham Co., UK. cube approx 4mm across |
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33121 Time(s) |
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Fluorite, Galena, Cerussite, Siderite. Pike Law Hushes, Teesdale, Durham Co., UK. cube approx 4mm across |
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Pike Law, this is the scar on the world that was dug out by hand I mentioned earlier. |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jun 23, 2012 15:10 Post subject: Re: Collection of Nurbo |
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Oh well I thought there might be some opinions about the above piece.
Here are 2 new additions, first up is a stunning Dry Gill Plumbogummite with Mimetite which would trim into a killer thumbnail, thing is that sugary Quartz matrix takes a lot of breaking and Im too paranoid Id damage the Plumbo, also the reverse has a really interesting mineral sandwich, a layer of Mimetite with Plumbo on top with a Manganese Oxide on that which is (to me anyway) very interesting indeed.
Then another Witherite from Haggs. This piece has the classic Haggs surface alteration to Baryte but still retains the Witherite underneath,
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Plumbogummite, Mimetite, Quartz, Limonite and Manganese Oxides Dry Ghyll, Caldbeck Fells, Cumbria. 85 x 30 mm |
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32818 Time(s) |
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Plumbogummite, Mimetite, Quartz, Limonite and Manganese Oxides Dry Ghyll, Caldbeck Fells, Cumbria. FOV approx 20 x 20 mm |
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32883 Time(s) |
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Plumbogummite, Mimetite, Quartz, Limonite and Manganese Oxides Dry Ghyll, Caldbeck Fells, Cumbria. FOV approx 20 x 20 mm |
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32868 Time(s) |
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Plumbogummite, Mimetite, Quartz, Limonite and Manganese Oxides Dry Ghyll, Caldbeck Fells, Cumbria. 85 x 30 mm |
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32883 Time(s) |
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Plumbogummite, Mimetite, Quartz, Limonite and Manganese Oxides Dry Ghyll, Caldbeck Fells, Cumbria. Here we see what appears to be a layer of Mimetite with a layer of Plumbogummite on top of it with a layer of Manganese Oxide on top of that, neat eh? FOV 20 mm across approx |
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Witherite with surface alteration to Baryte Haggs Mine, Nentsberry, Alston, Cumbria. 44 x 36 mm |
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Witherite with surface alteration to Baryte Haggs Mine, Nentsberry, Alston, Cumbria. FOV approx 20 mm across |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jul 15, 2012 05:49 Post subject: Re: Collection of Nurbo |
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Here we have a wonderful Victorian forgery, I wish I knew what kind of glue they used, its lasted over 100 years and is still holding fast, locals would glue these large Apatites onto Carrock Mine matrix and sell them to unsuspecting visitors, interesting to know that mineral frauds were going on back in those days.
Then Fluorite coloured by Haematite inclusions from the Florence Mine, which is now doing quite well as a media centre, where they have comedy shows, live music and run events as diverse as upholstery and film making, well done Gilbert for keeping the dream alive.
FInally today a European classic, gemmy blue Kyanite from Switzerland, there are a number of micro crystals which are brown, I assume from hunting around the interweb that they are Staurolite, but Im not sure..
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Quartz, Muscovite Carrock Mine, Caldbeck fells, Cumbria 100 x 90 mm Apatite to15 mm Apatite locality unknown, likely Russia or South America |
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32340 Time(s) |
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Quartz, Muscovite Carrock Mine, Caldbeck fells, Cumbria Apatite 15 mm Apatite locality unknown, likely Russia or South America |
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32351 Time(s) |
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Fluorite, Quartz, Specularite on Haematite Florence Mine Egremont, CUmbria 35 x 25 x 15 mm |
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Fluorite, Quartz Florence Mine Egremont, CUmbria FOV approx 15 x 10 mm |
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32392 Time(s) |
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Kyanite, Micro (?) Staurolite, on Schist Sponda Alp, Pizzo Forno, Chironico Valley, Laventina, Ticino, Switzerland. 30 x 20 mm |
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32372 Time(s) |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jul 15, 2012 14:56 Post subject: Re: Collection of Nurbo |
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I really love the way the Florence piece has no Eisenkiesel present.
I just thought Id add my favourite self collected Baryte, this piece came from a huge chunk I found which was actually in the beck itself and heavily stained, it took a lot of treatment to clean it up to the level it now shows. but then I think the whole issue of mineral treatments is immensely hypocrytical.
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Baryte Eller Beck, Askrigg, North Yorkshire. 50 x 35 mm approx |
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32316 Time(s) |
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Baryte Eller Beck, Askrigg, North Yorkshire. Stalactite (Stalagmite?) measures 25 mm approx |
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32313 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4899
Location: Barcelona
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Posted: Jul 15, 2012 17:15 Post subject: Re: Collection of Nurbo |
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nurbo wrote: | ...Finally today a European classic, gemmy blue Kyanite from Switzerland, there are a number of micro crystals which are brown, I assume from hunting around the interweb that they are Staurolite, but Im not sure.. |
Almost sure Staurolite.
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jul 20, 2012 18:58 Post subject: Re: Collection of Nurbo |
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In my usual untimely manner here are some close ups of the Calcite from the Stank mine, the one that appears on the john Betts mineral museum site. As I said I regard the inclusions as some kind of Manganese Oxide, likely Pyrolusite, (its very hard to get a good image as the pyrolusite, whoops, unknown, is below the surface and my stupid digital camera seems to focus on the nearest focal point)
the link ...
https://www.johnbetts-fineminerals.com/jhbnyc/mineralmuseum/picshow.php?id=25244
(link normalized by FMF)
while Im here I thought I'd wang my current favourite Sphalerite on too.
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Calcite + ? Stank Mine near Barrow in Furness,Cumbria FOV sapprox 15 x 15 mm |
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Calcite + ? Stank Mine near Barrow in Furness,Cumbria FOV sapprox 15 x 15 mm |
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Calcite + ? Stank Mine near Barrow in Furness,Cumbria FOV sapprox 15 x 15 mm |
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Calcite + ? Stank Mine near Barrow in Furness,Cumbria FOV sapprox 15 x 15 mm What an interesting termination this crystal has. |
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32151 Time(s) |
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Sphalerite on Dolomite w Quartz. Smallcleugh cross vein Smallcleugh Mine, Nenthead, Alston Moor, Cumbria. 95 x 40 mm |
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32182 Time(s) |
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Sphalerite on Dolomite w Quartz. Smallcleugh cross vein Smallcleugh Mine, Nenthead, Alston Moor, Cumbria. FOV approx 35 x 30 mm |
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32225 Time(s) |
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Sphalerite on Dolomite w Quartz. Smallcleugh cross vein Smallcleugh Mine, Nenthead, Alston Moor, Cumbria. Sphalerite approx 30 x 30 mm |
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32134 Time(s) |
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32169 Time(s) |
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