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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: May 28, 2014 21:01 Post subject: Bob's rocks - Andradite ( var. demantoid ) from Italy |
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A great old European classic. Several clusters of lustrous, gemmy olive-green Andradite (v. demantoid), with crystal to 11 x 10 mm, are attractively arranged on matrix. Less typical, bright-green, gemmy crystals to 4 mm provide a nice accent.
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Andradite ( var. demantoid ) Val Malenco, Sondrio Province, Lombardia Region, Italy
85 x 46 x 35 mm |
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21860 Time(s) |
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Andradite ( var. demantoid ) Val Malenco, Sondrio Province, Lombardia Region, Italy
85 x 46 x 35 mm closeup |
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Andradite ( var. demantoid ) Val Malenco, Sondrio Province, Lombardia Region, Italy
85 x 46 x 35 mm closeup |
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21818 Time(s) |
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Andradite ( var. demantoid ) Val Malenco, Sondrio Province, Lombardia Region, Italy
85 x 46 x 35 mm closeup |
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21856 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 13, 2014 15:56 Post subject: Bob's rocks - sceptered quartz from brazil |
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Picked this up from Luis Menezes in the mid 1990s.
This aesthetic specimen consists of several smoky Quartz scepters and is dominated by a large, slightly-sceptered smoky Quartz measuring 76 x 21 x 19 mm, with a milky phantom. All have skeletal features. It is nicely accented with minor white Albite and yellowish mica.
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Quartz (Sceptered) Barra de Salinas district, Barra de Salinas, Coronel Murta, Jequitinhonha Valley, Minas Gerais, Brazil 95 x 71 x 42 mm |
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21656 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 13, 2014 15:59 Post subject: Bob's rocks - Quartz gwindel from brazil |
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Another one from Luis circa 1995
I rarely see a Gwindel Quartz from Brazil, and this is a nice one with a gemmy, light-smoky color and high Alpine-like luster. It is complete all around, flattened with a pronounced twist, and is accompanied by a slightly flattened Quartz point. Like many Gwindels, this one has a few minor chips, but they don't distract. Although it looks like a Swiss Gwindel, it was purchased from well-known Brazilian dealer Luis Menezes in 1995, so the provinance is definitely Brazil. These are much rarer than Alpine Gwindels and this is a great example.
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Quartz (Gwindel) Novo Horizonte, Bahia, Brazil 63 x 51 x 28 mm |
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21630 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2040
Location: USA
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Posted: Jun 13, 2014 17:59 Post subject: Re: Bob's rocks |
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Really nice Brazilian gwindel Bob.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 13, 2014 18:41 Post subject: Re: Bob's rocks |
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Thanks, Mike. Thought you might like.
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Mike Wood
Joined: 16 Dec 2010
Posts: 456
Location: Northern England
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Posted: Jun 14, 2014 12:00 Post subject: Re: Bob's rocks |
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Hi Bob, I really like the classic andradite var. demantoid in talc specimen from Italy. Nice Brazillian Gwindel, if I'm allowed to say that! Edit - (Oh just realised Mike's said it already, so it must be alright).
Cheers,
Mike ;-)
_________________ Rock basher |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 14, 2014 12:53 Post subject: Re: Bob's rocks |
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Bob, I agree with both Mikes.
Don
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Jun 15, 2014 10:47 Post subject: Re: Bob's rocks |
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A really great andradite, Bob, wow!!!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 15, 2014 23:02 Post subject: Re: Bob's rocks |
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Thanks Tobi!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 26, 2014 23:03 Post subject: Bob's rocks - Siderite Switzerland |
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Lustrous, light-brown rhombs of Siderite to 11 mm cover a shiny-silver Muscovite matrix on this old, classic Swiss specimen. Lightly-smoky, transparent, gemmy Quartz crystals to 19 mm, come doubly terminated, richly cover one side of the specimen. In excellent condition, this is from the A.G. Boynton collection, circa 1910-1940s. Boynton was a mining engineer, and later City Manager of Boulder City, Nevada. He assembled a nice collection of rare specimens from the localities of that period.
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Siderite with Quartz Tavetsch, Vorderrhein Valley, Grischun, Switzerland 74 x 47 x 26 mm |
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Siderite with Quartz Tavetsch, Vorderrhein Valley, Grischun, Switzerland 74 x 47 x 26 mm |
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Siderite with Quartz Tavetsch, Vorderrhein Valley, Grischun, Switzerland 74 x 47 x 26 mm |
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21105 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jun 26, 2014 23:11 Post subject: Bob's rocks - Siderite Arizona |
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This highly lustrous, botryoidal, brownish iridescent Siderite displays a rainbow of colors. I have only seen a few of these and this is much better than any of those. This is from the A.G. Boynton collection. Boynton was a mining engineer circa 1910-1920, and City Manager of Boulder City, Nevada in the mid-1940s. He assembled a nice collection of rare specimens from the localities of the 1910s to the 1940s.
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Siderite (Iridescent) Antler Mine, Mohave Co., Arizona, USA 51 x 24 x 29 mm |
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Siderite (Iridescent) Antler Mine, Mohave Co., Arizona, USA 51 x 24 x 29 mm |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 12, 2014 13:24 Post subject: Bob's rocks - Dioptase California |
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Rich specimen with bright bluish-green Dioptase crystals to 1.5 mm filling a vug on contrasting light-colored Baryte matrix. Although these look much like the classic Dioptase from Harquahala, Arizona, these are in fact from a new locality - a small deposit found in late 2013 in California. This is one of the best available from the initial find. It has lots of sparkle factor in person, and is in great condition.
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Dioptase Hummingbird deposit, near Blythe, Riverside Co., California, USA 56 x 39 x 32 mm |
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20853 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 19, 2014 08:59 Post subject: Bob's rocks - Woodhouseite from California |
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Two specimens from the famous Champion Mine.
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Woodhouseite on Quartz Champion Mine, White Mts., Mono County, California, USA 51 x 38 x 34 mm
Plate of clear to translucent Quartz crystals to 30 x 13 mm is covered by hundreds of lustrous, translucent, tan crystals of Woodhousite to 4.5 mm. In perfect condition. |
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Woodhouseite on Quartz Champion Mine, White Mts., Mono County, California, USA 70 x 45 x 42 mm
Plate of clear to translucent Quartz crystals to 25 x 10 mm is covered by hundreds of lustrous, translucent, tan crystals of Woodhousite to 4.5 mm. The reverse side of the specimen is preferentially coated. In perfect condition. |
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20625 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 19, 2014 09:32 Post subject: Re: Bob's rocks |
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Bob,
I like your Woodhouseite.
Don
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 19, 2014 12:27 Post subject: Re: Bob's rocks |
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Don Lum wrote: | Bob,
I like your Woodhouseite.
Don |
Don, Which one?!? ;=) They are both recent Fall 2013 collected by prolific field collector Chris Lehman.
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 19, 2014 12:57 Post subject: Re: Bob's rocks |
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GneissWare wrote: | Don Lum wrote: | Bob,
I like your Woodhouseite.
Don |
Don, Which one?!? ;=) They are both recent Fall 2013 collected by prolific field collector Chris Lehman. |
Both but especially RG1368Lg.jpg
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am mizunaka
Joined: 09 Apr 2010
Posts: 2040
Location: USA
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Posted: Jul 19, 2014 15:34 Post subject: Re: Bob's rocks |
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Bob - Really nice combination pieces from the Champion Mine.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 19, 2014 16:46 Post subject: Re: Bob's rocks |
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am mizunaka wrote: | Bob - Really nice combination pieces from the Champion Mine. |
Thanks Mike.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 21, 2014 20:06 Post subject: Bob's rocks - Stibnite from Japan |
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I picked up this piece a while ago. It is ex Smithsonian #137353. It is an ex. Gary Hansen, PhD (Hansen Minerals) specimen.
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Stibnite Ichinokawa Mine, Saijo, Ehime Prefecture, Shikoku, Japan 33.1 x 5.7 x 3.6 cm |
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Stibnite Ichinokawa Mine, Saijo, Ehime Prefecture, Shikoku, Japan 33.1 x 5.7 x 3.6 cm |
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Stibnite Ichinokawa Mine, Saijo, Ehime Prefecture, Shikoku, Japan 33.1 x 5.7 x 3.6 cm |
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20362 Time(s) |
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Martin Rich
Joined: 15 Aug 2013
Posts: 127
Location: Lower Austria
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Posted: Jul 27, 2014 20:04 Post subject: Re: Bob's rocks |
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Rare to see a well terminated Stibnite from this classical locality and also a huge one!
Martin
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