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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Aug 30, 2011 10:42 Post subject: Re: Collection of Miguel. |
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Fluorite with Calcite
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Fluorite, Calcite Hill-Ledford mine, Cave-in-Rock, Illinois, USA 9.5 x 7 cm.
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vic rzonca
Joined: 18 Nov 2008
Posts: 820
Location: MA
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Posted: Aug 30, 2011 19:52 Post subject: Re: Collection of Miguel. |
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Very wonderful. If in my hands, I would turn it over, to see the yin to the yang, your call. You know, the back side. I've always found points of attachment interesting on such photogenic specimens. Fine!
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JMiguelE
Joined: 09 Apr 2007
Posts: 23
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Posted: Jan 15, 2013 08:57 Post subject: Re: Collection of Miguel. |
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Thanks, Vic.
The next mineral is a Pyrite with quartz from Spruce ridge.
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Pyrite, Quartz Spruce Ridge, King Co., Washington, U.S.A. 7,50 x 5,80 x 5,40 cm |
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Riccardo Modanesi
Joined: 07 Nov 2011
Posts: 619
Location: Milano
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Posted: Jan 17, 2013 08:47 Post subject: Re: Collection of Miguel. |
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Hi to everybody!
I wouldn't exclude there are both of those minerals inside the crystal! it's the quartz variety "Pink Fire Quartz"! Cabs and faceted gemstones are made with it!
Greetings from Italy by Riccardo.
José Miguel wrote: | Hello John. Thank you for your advice. The person who said me it is Lepidocrocite was the seller in Namibia. I attach a pic of an other crystal from Goboboseb with this kind of inclusions.
Te main crystal is 1 cm wide. |
_________________ 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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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Jan 30, 2013 09:40 Post subject: Re: Collection of Miguel. |
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Ferberite crystals covered, on the top and on the back, by siderite, and over it by calcite. Level 5. 2012
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Ferberite, Siderite, Calcite Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 9.30 x 8 x 4.50 cm
Ferberite crystals covered, on the top and on the back, by siderite, and over it by calcite |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Jan 30, 2013 11:18 Post subject: Re: Collection of Miguel. |
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Very fine specimen.
Isn’t this a cover of muscovite (gilbertite)?
Roger.
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1295
Location: Stewartstown, Pennsylvania, USA
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Posted: Jan 30, 2013 11:19 Post subject: Re: Collection of Miguel. |
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Pink fire quartz is alleged to contain covellite and hematite, not lepidocrocite. The presence of lepidocrocite in quartz has never been verified.
_________________ John S. White
aka Rondinaire |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jan 30, 2013 14:02 Post subject: Re: Collection of Miguel. |
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John S. White wrote: | Pink fire quartz is alleged to contain covellite and hematite, not lepidocrocite. The presence of lepidocrocite in quartz has never been verified. |
Very interesting John. I have often wondered about that and have refrained from calling 'harlequin' quartz 'lepidocrocite' quartz, but hematite included quartz. The covellite inclusions are obviously the blue to metal black particles.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Jan 30, 2013 15:10 Post subject: Re: Collection of Miguel. |
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Thanks Roger
There is an error in my description. The Ferberite Crystals are covered, on the top and on the back, by Siderite, and over it by Calcite.
____________________
Corrected
Carles M.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1177
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Posted: Jan 30, 2013 17:08 Post subject: Re: Collection of Miguel. |
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Many thanks,
Roger.
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panchito28
Joined: 03 Nov 2011
Posts: 15
Location: Spain
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Posted: Jan 30, 2013 18:00 Post subject: Re: Collection of Miguel. |
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Such a nice ferberite, congrats.
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Feb 01, 2013 10:02 Post subject: Re: Collection of Miguel. |
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A crystal of Arsenopyrite covered by small crystals of Pyrite; with Muscovite and Dolomite. Panasqueira. Level 5. 2012.
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Arsenopyrite, Muscovite, Dolomite Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 6.5x3.2x4.5 cm |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Feb 06, 2013 12:29 Post subject: Re: Collection of Miguel |
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Ferberite, Siderite, Quartz. Panasqueira. 1990
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Ferberite, Siderite, Quartz Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 5.5 x 5 x 6.3 cm Mined in 1990 |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Feb 07, 2013 04:18 Post subject: Re: Collection of Miguel |
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Ferberite with blue-violet Fluorite and Mica. Panasqueira, Level 1. Portugal. Circa 1987.
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Ferberite, Fluorite, Mica Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 5.5x5.2x3.5 cm |
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30509 Time(s) |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Feb 09, 2013 14:06 Post subject: Re: Collection of Miguel |
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A clear golden citrine quartz from Minas Geraes, Brazil. 2002.
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Quartz (Var: Citrine) Minas Geraes, Brazil 13x8x5.20cm |
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30395 Time(s) |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Apr 06, 2013 15:10 Post subject: Re: Collection of Miguel |
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This is a very fine quartz from Romania.
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Quartz, Pyrite Boldut Mine, Cavnic, Maramureș Co., Romania 13.50 x 9 x 8.20 cm |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Apr 11, 2013 17:04 Post subject: Re: Collection of Miguel |
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This is a sculptural quartz from Romania
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Quartz, Chalcopyrite Baia Sprie Mine, Baia Sprie, Maramureș Co., Romania 20x10x6,5 cm |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Apr 13, 2013 11:23 Post subject: Re: Collection of Miguel |
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Quartz with Dolomite from China
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Quartz, Dolomite Shangbao, Leiyang, Hunan, China 8.2x7.2x6 cm |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Apr 14, 2013 08:47 Post subject: Re: Collection of Miguel |
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Slender crystals of quartz with thin parallelepiped crystals of Baryte from China
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Quartz, Baryte Guanxi. China 8x7x6,3 cm |
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JoséMiguel
Joined: 09 Apr 2007
Posts: 46
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Posted: Apr 27, 2013 05:47 Post subject: Re: Collection of Miguel |
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Quartz with Siderite and Apatite from Panasqueira
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Quartz, Siderite, Apatite Panasqueira Mine, Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal 8.5 x 4.8 x 3.3 cm |
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