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am mizunaka
Joined: 09 Apr 2010
Posts: 2186
Location: USA
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 Posted: Sep 03, 2012 23:52 Post subject: Re: Bob's rocks |
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Bob,
Terrific Japanese specimens. Really like the butterfly calcite twin.
A&M
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1532
Location: Catalonia
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| Posted: Sep 04, 2012 03:26 Post subject: Re: Bob's rocks |
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Hi Bob!
Good specimens, good photos and good descriptions.
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Enrique Llorens
Joined: 02 Jun 2011
Posts: 406
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| Posted: Sep 04, 2012 04:03 Post subject: Re: Bob's rocks |
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Bob
Nice specimens.
Congratulations.
Enrique Llorens.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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| Posted: Sep 04, 2012 08:02 Post subject: Re: Bob's rocks |
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| Too great, Bob, please keep up posting them!
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Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
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| Posted: Sep 05, 2012 07:33 Post subject: Re: Bob's rocks |
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| Although I do not like that Chinese stuff that much: the genthelvite is awesome.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Oct 23, 2012 19:31 Post subject: Re: Bob's rocks |
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Calcite and Copper
Blocky Copper crystals up to 8 x 7 mm with a wonderful aged patina are capped by several rosy, copper-included Calcite crystals to 11 x 9 mm. The reverse is covered by white rhombs of Calcite to 5 mm.
| Description: |
Calcite and Copper
Keweenaw Peninsula, Upper Peninsula Region, Michigan, USA
40 x 32 x 18 mm |
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30952 Time(s) |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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| Posted: Oct 23, 2012 19:47 Post subject: Re: Bob's rocks |
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| Very lovely calcite twin and I also like the genthelvite.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Oct 23, 2012 19:59 Post subject: Re: Bob's rocks |
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Baryte on Calcite
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Baryte on Calcite
Elk Creek, Dalzell, Meade Co., South Dakota, USA
84 x 78 x 51 mm
A gorgeous, lustrous, gemmy, transparent, deep-amber-colored orthorhombic Baryte crystal measuring 24 mm in length is set perfectly upon a matrix covered by pretty yellow crystallized Calcite to 14 mm. The Baryte has a classic, razor sharp, chisel termination. The piece is perfectly proportioned and sits by itself for display. No damage. |
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30939 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Oct 23, 2012 20:13 Post subject: Re: Bob's rocks |
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Ferroaxinite with Quartz on Palygorskite
A slightly frosted doubly-terminated Quartz crystal, measuring 31 x 24 x 22 mm, accompanied by a small DT Quartz, forms a pseudo-scepter growth. These are complemented by up to 6 mm sherry-brown blades of Axinite. The Quartz are all attractively perched on a mat of Palygorskite ("mountain leather"). This is an excellent specimen with no damage.
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Ferroaxinite with Quartz on Palygorskite
New Melones Dam, Copperopolis, Calaveras Co., California, USA
65 x 60 x 52 mm |
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30869 Time(s) |
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Ferroaxinite with Quartz on Palygorskite
New Melones Dam, Copperopolis, Calaveras Co., California, USA
65 x 60 x 52 mm |
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30889 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Dec 22, 2012 21:58 Post subject: Re: Bob's collection |
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Here is a new one from Huanggangliang...
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Quartz with Fluorite
Huanggangliang Iron Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia A.R., China
58 x 50 x 46 mm
A slightly milky, palest green sceptered Quartz measuring 46 x 16 mm is surrounded by a halo of water-clear Fluorites to 25 mm. These Fluorites are of cuboctahedral habit with dodectahedral modifications, and is commonly seen from this Chinese locality, some faces are preferentially etched slightly. Only a very minor chip visible with a 10X loupe is present on the very tip of the Quartz, otherwise no damage. This is a nice association, very aesthetically presented. |
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30204 Time(s) |
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| Description: |
Quartz with Fluorite
Huanggangliang Iron Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia A.R., China
58 x 50 x 46 mm
A slightly milky, palest green sceptered Quartz measuring 46 x 16 mm is surrounded by a halo of water-clear Fluorites to 25 mm. These Fluorites are of cuboctahedral habit with dodectahedral modifications, and is commonly seen from this Chinese locality, some faces are preferentially etched slightly. Only a very minor chip visible with a 10X loupe is present on the very tip of the Quartz, otherwise no damage. This is a nice association, very aesthetically presented. |
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30190 Time(s) |
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| Description: |
Quartz with Fluorite
Huanggangliang Iron Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia A.R., China
58 x 50 x 46 mm
A slightly milky, palest green sceptered Quartz measuring 46 x 16 mm is surrounded by a halo of water-clear Fluorites to 25 mm. These Fluorites are of cuboctahedral habit with dodectahedral modifications, and is commonly seen from this Chinese locality, some faces are preferentially etched slightly. Only a very minor chip visible with a 10X loupe is present on the very tip of the Quartz, otherwise no damage. This is a nice association, very aesthetically presented. |
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30247 Time(s) |
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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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30738 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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30784 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: 5028
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: 2229
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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