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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Dec 15, 2008 04:59 Post subject: Collection of Nurbo |
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I'll start this off with a fine example of Halotrichite From The Golden Queen Mine in Mojave California. Its about 50mm tall.
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Dec 26, 2008 10:21 Post subject: Re: Collection of Nurbo |
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Some more,
my collection is somewhat humble compared to some posted here but I thought I'd post a few anyway. I wonder if any other forum users have felt daunted by the superb quality of postings on the "Collections" Forum, some of the things on here have really taken my breath away.
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Azurite from Toussit, 25mm long |
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My Favourite crystal a Petalite (not phenakite) from Mogok, measures 20 x 4mm |
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Phenakite on Pyrite, Mt Antero Colorado, 11 x 5mm |
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Schorl on Aquamarine Erongo, Aquamarine 12 x 10 x 5mm Schorl 3 x 2mm |
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Emeralds in matrix, emeralds measure about 10cm from "China" |
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Limonite pseudomorph after Pyrite, Carratraca, Málaga, Spain, 35 x 35 x 15mm |
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Aquamarine from Erongo 19mm |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1503
Location: Catalonia
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Posted: Dec 26, 2008 10:58 Post subject: Collection of Nurbo |
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Hi nurbo!
>my collection is somewhat humble compared to some posted here but I thought I'd post a few anyway.
Your photos are welcome. Unfortunately we all can't compare our specimens with the ones from the Folch collection published here as well. Many thanks for posting yours. I encourage you to keep publishing at this forum section.
___________
Carles Millan
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Tracy
Joined: 15 Sep 2006
Posts: 551
Location: Toronto
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Posted: Dec 26, 2008 11:13 Post subject: Re: Collection of Nurbo |
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Hi nurbo -
The purpose of sharing photos on FMF is not for "competition" but rather to show people what we, as collector, enjoy. And why. There are beautiful specimens among all of our collections . Echoing Carles' sentiments, I encourage you to keep on sharing photos with us, it is most appreciated and we enjoy having the chance to see them.
- Tracy
_________________ "Wisdom begins in wonder" - Socrates |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4919
Location: Barcelona
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Posted: Dec 26, 2008 11:18 Post subject: Re: Collection of Nurbo |
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Great Phenakite Nurbo, a lovely specimen!. BTW the Limonite pseudomorph after Pyrite is not from Navajún but from Carratraca, Málaga.
Thanks to share your specimens with us.
Jordi
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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Posted: Dec 26, 2008 15:56 Post subject: Re: Collection of Nurbo |
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hello Nurbo,the azurite seems to be a twin?!
Do you have other photos?
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Gail
Joined: 21 Feb 2008
Posts: 5839
Location: Texas, Lone Star State.
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Posted: Dec 26, 2008 17:38 Post subject: Re: Collection of Nurbo |
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Nurbo, I concur with the others, this is about showing your collection...there is no competition here. We all have different tastes and that's what makes this so enjoyable.
_________________ Minerals you say? Why yes, I'll take a dozen or so... |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Dec 27, 2008 17:41 Post subject: Re: Collection of Nurbo |
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Hello,
Its good to know that everyone is glad to see some of my specimens, here are some more.
parfaitelumiere I will get some more photo's of the strange azurite and post them in the next couple of days.
Thanks for the locality information on the Limonite Jordi, one of the things I love about this forum is that you can get superb information on localities.
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Azurite on matrix from Morenci mine Arizona, specimen 38 mm long, Azurite 5mm |
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A Phenakite cluster from Mogok 20 x 15 x 15 mm |
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From Spania Dolina 100 x 100mm. |
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This appeared inside a piece of septarian mudstone I chopped up, I have absolutely no idea what it is/was, the stone is from Carboniferous strata, an area called "The Caton Shales" in the north west of England,near my home. Ive recovered maybe 200 or so specimens from this area but this is unlike any of the others. Im tempted to cut it lengthways so as to see another view which may yield further clues. size 135 x 40 mm |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Dec 31, 2008 14:42 Post subject: Re: Collection of Nurbo |
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Heres the fishtail Azurite and a couple of others
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Morenci Azurite, 25 x 15 mm |
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Tsumeb Azurite, 25 x 9 mm |
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Hubei Azurite, 90 x 50 x 50 mm |
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Toussit Azurite 15 x 10 mm |
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Azurite from Bowland Forest near my house 20 x 20 mm |
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the fishtailed ones other side |
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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Posted: Jan 01, 2009 11:32 Post subject: Re: Collection of Nurbo |
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I would be really interstedbythe fishtail azurite!
I try to collect twins...
If you want to trade it,please tell it to me!
I don't know if it's possible to send private message on the forum?!
I have other azurite crystals,and twinned ones if you want!
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jan 01, 2009 16:21 Post subject: Re: Collection of Nurbo |
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That sounds interesting, if you want to email me at davidbruno(dot)uk(at)gmail(dot)com Im sure we can work something out.
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1297
Location: Stewartstown, Pennsylvania, USA
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Posted: Jan 02, 2009 14:35 Post subject: Re: Collection of Nurbo |
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The "phenakite" cluster from Mogok sure looks like topaz to me.
_________________ John S. White
aka Rondinaire |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jan 02, 2009 18:49 Post subject: Re: Collection of Nurbo |
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Hello John,
I have had my suspicions about that, Ive had this for about 3 years, I cant find any growth marks on it anywhere, which is my usual means of identifying Phenakites, it wasnt as expensive as i would have expected it to be either, but, the place I got it in Thailand did have a lot of Phenakite in stock, maybe I'll try the scratch test on this one. Its funny, now you suggest Topaz when I look at it I think your right. Good call, I love this forum :-)
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vic rzonca
Joined: 18 Nov 2008
Posts: 820
Location: MA
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Posted: Jan 02, 2009 19:43 Post subject: Re: Collection of Nurbo |
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The master at work
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1297
Location: Stewartstown, Pennsylvania, USA
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Posted: Jan 03, 2009 05:23 Post subject: Re: Collection of Nurbo |
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Just bear in mind that the scratch test is not easy to apply, is not very quantitative, and that many minerals have different hardnesses depending upon the direction in which they are scratched. It is very good for telling talc from topaz, but phenakite and topaz have very similar hardnesses and both are quite hard. A little known fact that in one direction quartz is actually harder than topaz, so you can see what you are up against. Hardness tests, in situations like this, are virtually worthless. Far more significant is morphology. Phenakite crystals are rhombohedral so it should be easy to observe three-fold symmetry if these are phenakite. Topaz is orthorhombic and the chisel-shaped crystals are very distinctive. Furthermore, the basal ceavage of topaz should be a prominent feature.
_________________ John S. White
aka Rondinaire |
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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Posted: Jan 03, 2009 05:57 Post subject: Re: Collection of Nurbo |
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it seems that the "phenakit" crystal on the specimen looks like orthorhombic here.
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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Posted: Jan 03, 2009 06:02 Post subject: Re: Collection of Nurbo |
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bad drawn...
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jan 03, 2009 08:13 Post subject: Re: Collection of Nurbo |
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Ive had another very close look at this cluster with a 10x loupe and hidden away in its depths I did find some striations at 90 degree's to the termination this is Topaz, given the excellent other information given here I now have no doubts.
The following are Phenakites for sure
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This one weighs 25.75 carats |
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Double terminated,measures about 17 x 12 mm |
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Phenakite on matrix from Colorado, crystal measures about 5mm |
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this one weighs 26 carats |
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1297
Location: Stewartstown, Pennsylvania, USA
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Posted: Jan 03, 2009 09:01 Post subject: Re: Collection of Nurbo |
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Little beauties and phenakes for sure. Note that the transparent ones are wonderfully twinned. Parfaitelumiere, I really like what you did with the topaz, that was brilliant. Perfectly clear!
_________________ John S. White
aka Rondinaire |
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nurbo
Joined: 23 Sep 2008
Posts: 457
Location: Lancashire
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Posted: Jan 03, 2009 12:05 Post subject: Re: Collection of Nurbo |
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This is actually a very timely topic for me and Im especially greatful to Parfaitelumiere for his excellent drawing. I received a truly awe inspiring pair of Phenakites on matrix as a christmas present and there are some other crystals present which i was trying to identify, I'm quite sure that the one in the photograph is a Topaz. The Phenakites are in pristine condition unfortunately the same cannot be said for the Topaz.
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This has the "Chisel shape" mentioned earlier |
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These are beautiful, this is an old specimen from Panthahole mine, close to Mt.Gaba Ant Bwe Taung (Ant Pywe Taung), northeast of Mogok, Molo quarter, Momeik Township, Burma (Myanmar) The whole piece measures 52 x 34 x 26 mm and the crystals: 9 x 8 x 6 mm |
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