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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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26635 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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26666 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...
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stone-cutter |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4894
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: 2067
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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25656 Time(s) |
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| Description: |
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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25626 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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25708 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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25007 Time(s) |
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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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24995 Time(s) |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1469
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: 4102
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
Canada |
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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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24581 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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24569 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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24605 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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24587 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
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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23915 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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23952 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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23925 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
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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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23871 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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23867 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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23940 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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23863 Time(s) |
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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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23874 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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23827 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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23842 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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23826 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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23853 Time(s) |
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