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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jan 25, 2009 14:40 Post subject: Re: Collection of Nurbo |
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Hello everyone, sorry for the long silence.
I thought Id post some pictures of my Calcite, It comes from Wales, Taffs Well Quarry is my suspicion but Im not absolutely sure. This specimen is so beautiful it takes my breath away everytime I look at it. It weighs slightly over 1.2 kilo's and measures 14 x 13 x 11 cm
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Im a little confused about what is going on here, if anyone can fill me in I would be eternally grateful |
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marvsT/Nminerals
Joined: 06 Nov 2008
Posts: 68
Location: Juda, Wisconsin
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Posted: Jan 25, 2009 20:27 Post subject: Re: Collection of Nurbo |
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Nurbo, The "scales" on the outside of your crystal appear to be orientated rhombohedral calcite crystals that grew over the large inner crystal after the original mineral bearing fluids were interrupted then began again with a slightly different character. Yes, it is a really nice piece! Marv
_________________ Member: Badger Lapidary and Geological Society
Great things can be found in small packages! |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 04, 2009 19:09 Post subject: Re: Collection of Nurbo |
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Thanks Marv that makes perfect sense.
heres a few more from my shelves.
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Fluorite from Elbolton mine, Grassington, Yorkshire, the purple is only visible from this angle, the cubes look clear otherwise. Size: 38 x 18 x 25 mm |
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Quartz from Erongo with Schorl? Size of Quartz: 8 x 4 x 3.5 mm |
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Malachite and Chrysocola from the Congo Size: 13 x 9 x 4.5 cm |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Feb 04, 2009 19:45 Post subject: Re: Collection of Nurbo |
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Nurbo,
Your second photo is not Jeremejevite but Quartz with inclusions of something, maybe some member of the group of Tourmaline or Epidote. Do you want that I delete this photo?
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 05, 2009 03:45 Post subject: Re: Collection of Nurbo |
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Just relabel it if you dont mind. It came from a flat of Jeremejevite that I bought so I assumed that is what it was. Im really grateful to everyone at this forum who spots these mislabelled items and Im always happy to be corrected when someone knows something I dont.
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Feb 05, 2009 07:30 Post subject: Re: Collection of Nurbo |
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Done
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 05, 2009 08:22 Post subject: Re: Collection of Nurbo |
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Thanks Jordi, I really must stop assuming that because a thing comes labelled that the label is correct. I've checked the rest of the flat and they make it really obvious that the one in question is quartz.
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This one is Jeremejevite for sure, it seems to have a sceptred termination. size 9 x 2.5 x 2 mm, I tried to capture the Pleochroism in this photo with partial success. |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 06, 2009 13:43 Post subject: Re: Collection of Nurbo |
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Some more of my collection and a favourite collecting site.
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The Heysham Anti-cline collecting site for ancient sea critters. 20 minutes from my house. |
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Baltic Amber with what look like small termites FOV 20mm |
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Some perfect green apophylites on stilbite, label said from Maharastra. size 9.5 x 7.5 x 3.5 cm |
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Dogtooth Calcite. No locality information I'm afraid, if anyone can help me out as to where it might be from I'd be very grateful. size 10 x 9.5 x 5.5 cm |
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Singingstone48
Joined: 05 Feb 2009
Posts: 19
Location: Houston, Texas
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Posted: Feb 06, 2009 14:05 Post subject: Re: Collection of Nurbo |
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This specimen is most likely from the Santa Eulalia District in Chihuahua, Mexico. Peter M. might be able to tell you which mine or camp it came from. We have seen similar specimens here in Houston for the last 25 years. They used to be common in the flea markets and we see them in older collections all the time. This is a nice group, good size and aesthetic.
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Singingstone48
Joined: 05 Feb 2009
Posts: 19
Location: Houston, Texas
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Posted: Feb 06, 2009 14:10 Post subject: Re: Collection of Nurbo |
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On the apophyllite on stilbite, the locality is a cavity in a water well in one of the small towns in Maharashtra, India. I don't remember the specific locality and I'm not home to check my specimen, but there was an article by the Indian dealer Makki in Rocks and Minerals in the last year or so that talked about this location specifically. By the way, some of the apophyllite crystals are cleaved, since all terminations from this locality are pointed. This is common on most of the specimens I've seen.
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Singingstone48
Joined: 05 Feb 2009
Posts: 19
Location: Houston, Texas
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Posted: Feb 06, 2009 14:28 Post subject: Re: Collection of Nurbo |
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The fossil in the septarian is almost assuredly a cephalopod, probably a straight one given the age of the strata you found it in. Concretions need a nucleus to begin forming, and fossils are often used. Here in the USA, in the mudstones from South Dakota, ammonites of Mesozoic age are found in mudstone concretions up to 5 ft across! Most of the cephalopods of the Carboniferous (Mississippian/Pennsylvanian in the USA) were straight, and some got up to 20' long!
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geoalfon
Joined: 06 Feb 2009
Posts: 9
Location: Spain
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Posted: Feb 06, 2009 14:30 Post subject: Re: Collection of Nurbo |
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Hi Nurbo, you Green Apophyllite is from in a well near Bidkin a town about 20 kms south of Aurangabad city.
You can see in http(:)//matrixmineralia(.)com/Pages/green(.)htm
Best regards
Alfonso
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 07, 2009 11:20 Post subject: Re: Collection of Nurbo |
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Hi,
Thanks very much for the locality information and the Cephalopod identity,. The matrixmineralia article is fantastic.
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 16, 2009 16:12 Post subject: Re: Collection of Nurbo |
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Here are a few more, Including some "Sand balls" I read they were formed by lightning hitting the desert and melting the sand which sounds feasible though Im very open to suggestions they may be formed in some other way.
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This is a "Somerset Potato" The farmers turn them up in the fields of Somerset and when they are covered in mud they look like Potatoes, They contain Calcite, Quartz and sometimes Amethyst. |
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Apophylite close up, you can see micro quartz crystals on its underside, apophylite crystal size 35 x 10 x 10 mm |
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17 x 12 x 8 cm "Sand Balls" Label says from the Sahara. |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Feb 27, 2009 14:39 Post subject: Re: Collection of Nurbo |
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As far as I remember I picked this up from on the side of a disused railway track back in the early 1970's in North West England. It was an old railway line from the days before they put crushed limestone under the rails, when they used slag. It measures 12.5 x 5 x 4 cm and weighs about 439 grammes. The photo is overexposed, it shows the crystalisation pattern really nicely. (I wish I'd done it on purpose then I would look like a better photographer than I really am :-) . it is quite black in person.
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Apr 25, 2009 10:54 Post subject: Re: Collection of Nurbo |
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Here are some Wulfenites the label says from Mibladen, Im happy to be corrected if this is wrong, or if anyone knows anything more specific please let me know..
The first Wulfenite is 9mm across and it looks great aginst the Baryte, the whole specimen is 30 x 20 x 10 mm.
The second one has them stacked together, the Wulfenites are 19mm across the longest edge and it has quite a few shiny grey crystals on the bottom which Ive assumed to be Galena, its very heavy for its size. measures 23 x 21x 22 mm.
The third is in my eyes one of my most aesthetically pleasing specimens, the largest Wulfenite is 10 mm across, the whole piece measures 70 x 75 x 35 mm.
b
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Apr 25, 2009 11:05 Post subject: Re: Collection of Nurbo |
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Mibladen, Midelt, Morocco is the right locality for these Wulfenites.
Jordi
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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Posted: Apr 25, 2009 13:03 Post subject: Re: Collection of Nurbo |
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Hi Nurbo!
Happy to see you ,and to see your new specimens!
Regarding wulfs,omeone told me of boulmaden,I have baught a specimen,and it has the same shape,and the Baryte is really similar to yours.
This locality is neart to Mibladen.
Do you have "ghosts" in your crystals?
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Apr 25, 2009 13:31 Post subject: Re: Collection of Nurbo |
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Thanks for confirming that Jordi, Ive learned never to presume labels are correct.
Parfaitlumiere there are no ghosts in these ones, Id like to see your Wulfenite from Boulmaden, maybe you could post a photo in your collection photo's?
I recently got this too, its a Topaz on Mica from Mogok, unfortunately Im not sure where in Mogok. The Topaz measures 9 x 5 mm . the Mica is 25 x 15 mm.
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Ed Huskinson
Joined: 15 Apr 2009
Posts: 318
Location: Kingman, Arizona
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Posted: Apr 26, 2009 01:47 Post subject: Re: Collection of Nurbo |
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Nurbo. Welcome to the 'hood. I really like your "Little Wulfie". It's a nice specimen. Keep 'em coming!
Ed in Kingman
_________________ La respuesta está en las rocas!! Estudiadlas!!
Ed |
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