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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: May 25, 2013 15:42 Post subject: Re: Naica Mine - (11) |
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Sphalerite (showing spinel twinning) with calcite.
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Sphalerite with calcite. Naica, Chihuahua, Mexico. 38 mm specimen. |
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29660 Time(s) |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: May 25, 2013 16:06 Post subject: Re: Naica Mine - (11) |
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Fluorite spinel twin.
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Fluorite, spinel twin. Naica, Chihuahua, Mexico. Twin is 2 cm on 7 cm specimen.
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29587 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2047
Location: USA
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: Jun 07, 2013 22:06 Post subject: Re: Naica Mine - (11) |
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Yet another twin from Naica.
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Chalcopyrite with quartz and calcite. Naica, Chihuahua, Mexico. 2 cm twin on 12 cm matrix. |
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29502 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2047
Location: USA
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Posted: Jun 09, 2013 03:33 Post subject: Re: Naica Mine - (11) |
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The view from the three sides of the specimen.
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Anhydrite and Calcite Naica, Mun. de Saucillo, Chihuahua, Mexico 7.5 x 5.5 x 5.5 cm |
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Anhydrite and Calcite Naica, Mun. de Saucillo, Chihuahua, Mexico 7.5 x 5.5 x 5.5 cm |
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Anhydrite and Calcite Naica, Mun. de Saucillo, Chihuahua, Mexico 7.5 x 5.5 x 5.5 cm |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Oct 14, 2015 07:48 Post subject: The Naica Mine closes? |
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According to Manuel Mesa, Naica, one of the most famous mines for collectors, has closed due to the impossibility to maintain its drainage system. It seems that they were draining 1400 l/s and they can't continue with this effort.
To know more please use : Naica ha cerrado !!! (in Spanish language)
Mineral: | Octahedral Fluorite with Calcite, Pyrite and Quartz |
Locality: | Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | Specimen size: 6.4 × 4.1 × 3.3 cm |
Description: |
Main crystal size: 2 × 1.8 cm Former Fluorite collection of Jan Buma. Number 080401 |
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Peter Megaw
Site Admin
Joined: 13 Jan 2007
Posts: 963
Location: Tucson, Arizona
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Posted: Oct 14, 2015 08:29 Post subject: Re: The Naica Mine closes? |
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It may be a little early to sound the death knell for Naica according to a conversation I had last week with Penoles personnel. They HAVE suspended operations due to their inability to stop the inflow of water from an open zone along the Naica Fault that they hit last January. They did not have a pump failure, but do not have adequate pumping capacity to draw down the water enough to get any kind of plug placed the inflow zone. They are now evaluating whether or not they have enough ore blocked out on the other side of the fault to justify driving a new ramp above the inflow zone and drain that side of the mine and resume operations. Naica is an important source of lead concentrates for Penoles...and they need lead to recover silver in their smelter...so they will be looking at this very hard. It is probably not as simple as the basic value of the ore, which should add impetus to their efforts. Also, there is a major military installation that surrounds the mine that gets its water from the mine, so that may influence things too.
They do note that the Cave of the Giants is in no immediate danger of flooding
Naica is down, but not necessarily out....Nils Desperandum
Mineral: | Gypsum var. selenite |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 5 x 10 x 25cm |
Description: |
Superb single gypsum crystal from Naica. Exhibited for years in the company offices, the specimen was stolen a year or so ago. It was the only thing taken so it was probably stolen on order. If you see it or know where it is the company would very much like it back! Peter Megaw photograph |
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Mineral: | quartz on fluorite |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 25 x 12 x 10 cm |
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Doubly terminated skeletal quartz on a bed of spinel-twinned fluorites. (Peter Megaw specimen, Jeff Scovil photograph) |
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_________________ Siempre Adelante! |
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Manuel Mesa
Joined: 23 Dec 2011
Posts: 166
Location: Teruel
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Posted: Oct 14, 2015 10:07 Post subject: Re: The Naica Mine closes? |
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Peter,
You can check the news dated on 13 October on the website of the company - https://www.penoles.com.mx (Link normalized by FMF) -. This news was communicated to the Mexican Stock Exchange.
I know Naica was the second most important lead mine of Mexico, and I guess it will reopen again in the future, but not in the short term.
Manuel Mesa
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Oct 14, 2015 10:49 Post subject: Re: The Naica Mine closes? |
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Peter Megaw wrote: | They do note that the Cave of the Giants is in no immediate danger of flooding |
At least some good news, let's hope that this treasure chamber will survive :-/
P.S. Great specimens, Peter, especially the giant quartz with fluorite, wow!
Mineral: | Fluorite, Galena |
Locality: | Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | Specimen size 7 cm |
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Mineral: | Galena, Calcite |
Locality: | Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | Specimen size 6 cm |
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26191 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Oct 14, 2015 12:28 Post subject: Re: The Naica Mine closes? |
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I merged the last four posts in the former thread: Naica Mine - (11) in order to improve both threads.
Please more images of specimens from Naica as a kind of homage to this great mine! ;-)
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marco campos-venuti
Joined: 09 Apr 2014
Posts: 207
Location: Sevilla
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Posted: Oct 14, 2015 13:15 Post subject: Re: Naica Mine - (11) |
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That is.
Mineral: | Calcite twinned crystals with Sphalerite and Quartz |
Locality: | Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 14 cm |
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Mineral: | Gypsum twinned crystal with water bubble |
Locality: | Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 13.5 cm |
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26018 Time(s) |
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Peter Megaw
Site Admin
Joined: 13 Jan 2007
Posts: 963
Location: Tucson, Arizona
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Posted: Oct 14, 2015 15:20 Post subject: Re: Naica Mine - (11) |
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As requested more homage to Naica's minerals
Mineral: | Fluorite |
Locality: | Naica Mine, Torino-Tehuacan Chimney, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 8 x8 x8 cm |
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Octahedral fluorite, Torino-Tehuacan Chimney ca 1984. Peter Megaw specimen, Jeff Scovil photograph |
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Mineral: | Fluorite |
Locality: | Naica Mine, Torino-Tehuacan Chimney, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 6 x 6 x 2 cm |
Description: |
Spinel twinned fluorite, Torino Tehuacan Chimney. Lauren Megaw specimen, Jeff Scovil photograph |
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25962 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 14, 2015 16:57 Post subject: Re: Naica Mine - (11) |
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Let's hope that we will see this great mine reopen sometime in the future. Until then, here is my contribution to this locality which has provided so many wonderful mineral specimens to collectors.
Mineral: | Gypsum |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 9.5 cm |
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25855 Time(s) |
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Mineral: | Fluorite |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 2.4 cm |
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25812 Time(s) |
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Mineral: | Galena |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 7.0 cm |
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Mineral: | Calcite |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 6.9 cm |
Description: |
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25832 Time(s) |
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Enrique Llorens
Joined: 02 Jun 2011
Posts: 390
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Posted: Oct 15, 2015 01:42 Post subject: Re: Naica Mine - (11) |
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Great mine Naica.
Photo: Jeff Scovill.
Mineral: | Fluorite |
Locality: | Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico | |
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Dimensions: | 4,5x2,5 cm. aprox. |
Description: |
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25683 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Oct 15, 2015 10:12 Post subject: Re: Naica Mine - (11) |
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Wonderful specimens, especially Peter's fluorite octahedron (2013-02-0157.jpg), what a beauty!
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Les Presmyk
Joined: 06 Dec 2007
Posts: 372
Location: Gilbert, AZ
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Posted: Oct 15, 2015 11:38 Post subject: Re: Naica Mine - (11) |
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And no photograph of Peter's specimen I have seen ever captures the true colors of the fluorite.
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