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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Dec 22, 2012 22:04 Post subject: Re: Bob's collection |
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This Huanggangliang piece is on a lustrous black matrix I haven't yet identified...
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Fluorite with Quartz Huanggangliang Iron Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia A.R., China
79 x 61 x 56 mm
A large, lustrous, clear Fluorite, measuring 39 x 29 x 29 mm, is perched on a nest of lustrous, pale greenish, sceptered Quartz crystals to 19 mm long, all on a matrix of lustrous black, blocky crystals of Magnetite(?). The reverse side has negative faces from now missing Fluorites. No damage. |
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26645 Time(s) |
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Fluorite with Quartz Huanggangliang Iron Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia A.R., China
79 x 61 x 56 mm
A large, lustrous, clear Fluorite, measuring 39 x 29 x 29 mm, is perched on a nest of lustrous, pale greenish, sceptered Quartz crystals to 19 mm long, all on a matrix of lustrous black, blocky crystals of Magnetite(?). The reverse side has negative faces from now missing Fluorites. No damage. |
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26676 Time(s) |
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Chris Foltz
Joined: 28 Oct 2012
Posts: 92
Location: Maryland
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Posted: Dec 22, 2012 22:12 Post subject: Re: Bob's rocks |
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speechless...
_________________ stone-cutter |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4896
Location: Barcelona
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Posted: Dec 23, 2012 04:59 Post subject: Re: Bob's collection |
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GneissWare wrote: | This Huanggangliang piece is on a lustrous black matrix I haven't yet identified... |
Yes, as you suggest in the caption, is Magnetite.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Dec 23, 2012 12:58 Post subject: Re: Bob's rocks |
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Nice update. Glad to see more of your collection.
Michael
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Dec 23, 2012 15:19 Post subject: Re: Bob's rocks |
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Thanks!
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Enrique Llorens
Joined: 02 Jun 2011
Posts: 388
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Posted: Dec 24, 2012 05:37 Post subject: Re: Bob's rocks |
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Good selection and aesthetics.
A greeting. Enrique.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Dec 26, 2012 01:34 Post subject: Re: Bob's rocks |
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This old Colorado piece was just finished having some air abrasion done to clean it up a bit. You can compare the after photo with before photo to see the differences.
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Microcline (v. Amazonite) -- cleaned Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer's (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. |
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25666 Time(s) |
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Microcline (v. Amazonite) -- cleaned Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer's (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. |
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25636 Time(s) |
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Microcline (v. Amazonite) -- before cleaning Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer's (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. |
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25718 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Feb 18, 2013 22:49 Post subject: Re: Bob's rocks |
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Carles -- These are for you as I know you like Xuebaoding
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Scheelite on Muscovite Mt. Xuebaoding, Pingwu County, Mianyang Prefecture, Sichuan Province, China 101 x 68 x 40 mm
Fiery-orange Scheelite measuring 55 x 43 mm is perched a sculptural matrix of Muscovite, accented by small gemmy Qyartz crystals. Several nice rosettes of Muscovite are perched atop the Scheelite. Absolutely pristine. |
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Beryl on Albite with Quartz and Cassiterite Mt. Xuebaoding, Pingwu County, Mianyang Prefecture, Sichuan Province, China 70 x 60 x 47 mm
A large lustrous pale-blue Beryl measuring 51 x 40 x 19 mm is perched atop a bed on off-white, lustrous Albites to 16 mm accented by sprays of Muscovite and sharp, clear Quartz points. A second Beryl, partly included by lustrous black rosettes of Cassiterite provide a nice accent. Absolutely pristine. |
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25005 Time(s) |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1470
Location: Catalonia
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Posted: Feb 19, 2013 04:24 Post subject: Re: Bob's rocks |
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GneissWare wrote: | Carles -- These are for you as I know you like Xuebaoding |
You're right! Very fine specimens and excellent photography. I do like them.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4106
Location: Germany
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Posted: Feb 19, 2013 14:37 Post subject: Re: Bob's rocks |
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Indeed two wonderful Xuebaoding specimens, really great ones!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Feb 19, 2013 14:54 Post subject: Re: Bob's rocks |
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Thanks. These just came out of a stash in China, and I snatched them up as soon as I got wind of them. There is something about Xuebaoding that I really like, and just can't hardly pass up on a specimen from there.
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Feb 19, 2013 21:32 Post subject: Re: Bob's rocks |
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All I can say is WOW!!!
_________________ Joseph D'Oliveira
Hanmer, Ontario
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Mar 02, 2013 02:21 Post subject: Re: Bob's collection |
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Back in the early 1990s I bought much of the material produced by my friend Graham Sutton at the Veta Grande claim outside Quartzsite Arizona. I kept this piece because the geologist in me liked it. It clearly shows how Fadens are formed.
This Quartz matrix coated with micaceous tan Pyrophyllite hosts many lustrous, mirror-bright, black blades of Hematite to 25 mm across and flattened, clear Quartz points to 37 mm long. What makes this specimen interesting are the parallel Faden Quartz to 17 mm long, which clearly bridge a crack in the matrix, clearly illustrating how Fadens form. These Fadens are accented by small lustrous Hematite blades. Collected in 12/1990 by Graham Sutton. No damage.
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Hematite with Quartz Fadens Veta Grande claim, Dome Rock Mts., near Quartzsite, La Paz County, Arizona, USA 181 x 161 x 84 mm |
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24591 Time(s) |
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Hematite with Quartz Fadens Veta Grande claim, Dome Rock Mts., near Quartzsite, La Paz County, Arizona, USA 181 x 161 x 84 mm |
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24579 Time(s) |
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Hematite with Quartz Fadens Veta Grande claim, Dome Rock Mts., near Quartzsite, La Paz County, Arizona, USA 181 x 161 x 84 mm |
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24615 Time(s) |
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Hematite with Quartz Fadens Veta Grande claim, Dome Rock Mts., near Quartzsite, La Paz County, Arizona, USA 181 x 161 x 84 mm |
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24597 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2039
Location: USA
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Posted: Mar 02, 2013 03:22 Post subject: Re: Bob's rocks |
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Very nice specimen. I really like the quartz bridges.
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Mar 02, 2013 03:31 Post subject: Re: Bob's rocks |
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Very interesting Bob. Good, visible example of how Fadens are formed.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: May 11, 2013 22:47 Post subject: Bob's collection |
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Minerals from the Hecla Rosebud Mine, Rosebud District, Sulphur, Pershing County, Nevada.
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Baryte with Pyrrhotite Hecla Rosebud Mine, Rosebud District, Sulphur, Pershing County, Nevada, USA 7.0 x 6.0 x 3.5 cm |
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23925 Time(s) |
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Miargyrite Hecla Rosebud Mine, Rosebud District, Sulphur, Pershing County, Nevada, USA 10.0 x 9.1 x 4.0 cm |
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23962 Time(s) |
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Baryte Hecla Rosebud Mine, Rosebud District, Sulphur, Pershing County, Nevada, USA 12.4 x 6.3 x 5.0 cm |
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23935 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: May 11, 2013 23:04 Post subject: Re: Bob's collection |
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GneissWare wrote: | Back in the early 1990s I bought much of the material produced by my friend Graham Sutton at the Veta Grande claim outside Quartzsite Arizona. I kept this piece because the geologist in me liked it. It clearly shows how Fadens are formed.
This Quartz matrix coated with micaceous tan Pyrophyllite hosts many lustrous, mirror-bright, black blades of Hematite to 25 mm across and flattened, clear Quartz points to 37 mm long. What makes this specimen interesting are the parallel Faden Quartz to 17 mm long, which clearly bridge a crack in the matrix, clearly illustrating how Fadens form. These Fadens are accented by small lustrous Hematite blades. Collected in 12/1990 by Graham Sutton. No damage. |
Bob,
Thank you for the clear pictures and explanation.
Don
_________________ hogwild |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: May 11, 2013 23:07 Post subject: Re: Bob's rocks |
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Minerals from several Nevada localities.
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Azurite with Malachite and Chrysocolla Robinson Open Pit, Robinson District, Ruth, White Pine County, Nevada, USA 4.2 x 2.8 x 1.4 cm |
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23881 Time(s) |
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Stibnite on Baryte Deep Post Mine, Lynn District, North of Carlin, Eureka County, Nevada, USA 7.0 x 5.7 x 4.5 cm |
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23878 Time(s) |
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Baryte SSX (South Saval Extension) Mine, Elko County, Nevada, USA 9.5 x 9.1 x 7.3 cm |
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23950 Time(s) |
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Andradite Osgood Mountains, Humboldt County, Nevada, USA 7.3 x 5.3 x 4.0 cm |
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Epidote with Quartz Julie (Lola) claim, Pamlico District, near Hawthorne, Mineral County, Nevada, USA 8.1 x 6.7 x 4.0 cm |
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23885 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: May 11, 2013 23:13 Post subject: Re: Bob's rocks |
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Here are a few from the Manhattan District, Nye County, Nevada
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Stibnite Manhattan District, Nye County, Nevada, USA 13.3 x 9.3 x 5.8 cm |
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23838 Time(s) |
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Stibnite Manhattan District, Nye County, Nevada, USA 7.1 x 6.5 x 3.7 cm |
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23853 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: May 11, 2013 23:19 Post subject: Re: Bob's rocks |
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A few more miscellaneous Nevada specimens.
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Baryte with Quartz Murray Mine, Independence Mountains District, Independence Mts., near Elko, Elko County, Nevada, USA 10.5 x 4.0 x 2.2 cm Zone 4, Level 175, Drift 13; Sugarbowl Pocket |
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23836 Time(s) |
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Baryte on Orpiment Twin Creeks Mine, Potosi District, Humboldt County, Nevada, USA 10.5 x 8.5 x 8.0 cm |
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23863 Time(s) |
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