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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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 Posted: May 23, 2016 09:32 Post subject: Re: Bob's rocks |
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| AWESOME PIECE!!!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: May 23, 2016 10:08 Post subject: Re: Bob's rocks |
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| Also proves that minerals are better with a good hefeweizen
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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| Posted: May 23, 2016 10:28 Post subject: Re: Bob's rocks |
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| GneissWare wrote: | | Also proves that minerals are better with a good hefeweizen |
EVERYTHING is better with a good Hefeweizen :) But please, not from a can!!! :o
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jun 19, 2016 23:53 Post subject: Bob's rocks - Galena pseudomorph Peru |
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Several radiating, 3-dimensional sprays of Galena pseudomorphing what was once Stibnite. all perched on lustrous white Baryte crystals. The largest spray is 53 mm across. Formerly in the collection of Richard Jackson, this specimen is pristine.
| Mineral: | Galena (after Stibnite ) on Barite |
| Locality: | | San Genaro Mine, Castrovirreyna District, Castrovirreyna Province, Huancavelica Department, Peru |  |
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| Dimensions: | 118 x 100 x 60 mm |
| Description: |
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30095 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jan 17, 2017 23:17 Post subject: Bob's rocks - Azurite from Zambia |
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| Mineral: | Azurite with Malachite |
| Locality: | | Nchanga Mine, Chingola, Chingola District, Copperbelt Province, Zambia | |
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| Dimensions: | 115 x 91 x 46 mm |
| Description: |
| Radiating blades of lustrous, blue Azurite to 22 mm long, some partly altering to lustrous, green Malachite. Small blades of lustrous, green Malachite accent the Azurite. Collected by Richard LeSuer in 1979. Much more lustrous in person. |
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28475 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jan 18, 2017 20:31 Post subject: Bob's rocks - Fluorite from Cady Mts., California |
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| Mineral: | Fluorite |
| Locality: | | Afton Canyon, Afton, Cady Mountains, San Bernardino County, California, USA | |
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| Dimensions: | 73 x 45 x 20 mm |
| Description: |
| Lustrous, translucent, dark-green, intergrown octahedrons of Fluorite to 16 mm across, accented with coatings of fine-grain white Quartz. California is not known for producing Fluorite, and there are only two localities that produce green (and octahedral!) Fluorites - this locality and the Felix prospect in Azusa; both of these localities are now closed to collecting. It is free of damage on the face. Strongly fluorescent in LW, and less so in SW, which is uncommon. |
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28002 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jan 22, 2017 12:56 Post subject: Bob's rocks - garnet from Mali |
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| Mineral: | Andradite-Grossular Series |
| Locality: | | Kayes Region, Mali | |
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| Dimensions: | 71 x 62 x 47 mm |
| Description: |
| Pair of lustrous, yellowish-green crystals of garnet to 47 mm of the Grossular to Andradite series, accented with smaller garnets. Some of the garnets are very gemmy, and of cutting-grade. |
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27756 Time(s) |
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roswellrockman
Joined: 20 Jan 2017
Posts: 4
Location: Roswell NM
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| Posted: Jan 24, 2017 19:39 Post subject: Re: Bob's rocks |
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Hi
This cluster looks very similar to a cluster I have, that I've been meaning to have ID'D. mine is darker and not as translucent. Do these crystals have lighter and darker tones?
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jan 24, 2017 20:05 Post subject: Re: Bob's rocks |
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| They can have dark cores. These are just particularly good because they are internally gemmy and could cut some nice stones. Ain't goin' to happen.
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Feb 23, 2017 22:52 Post subject: Bob's rocks - Yaogangxian Fluorite |
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...
| Mineral: | Fluorite on Quartz with Chalcopyrite |
| Locality: | | Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China | |
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| Dimensions: | 114 x 102 x 59 mm |
| Description: |
| Lustrous, complex cubes of light-teal-colored Fluorite, the largest measuring 39 x 37 x 30 mm, with sharp purple phantoms are perched on bright-white, opaque points of Quartz to 22 x 11 mm. Bright, brassy Chalcopyrite to 13 mm provides a nice accent. No damage. |
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27253 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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| Posted: Feb 24, 2017 01:42 Post subject: Re: Bob's rocks - Yaogangxian Fluorite |
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| GneissWare wrote: | Fluorite on Quartz with Chalcopyrite
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China |
Aesthetic shape, good contrast, stunning fluorite crystals - simply a great specimen!
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1531
Location: Catalonia
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| Posted: Feb 24, 2017 09:23 Post subject: Re: Bob's rocks - Yaogangxian Fluorite |
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| GneissWare wrote: | | Fluorite on Quartz with Chalcopyrite |
Nice YGX fluorite!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Feb 24, 2017 20:06 Post subject: Re: Bob's rocks |
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| Thanks, all!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Feb 27, 2017 00:33 Post subject: Bob's rocks - Chinese minerals |
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A few Chinese minerals from the past 2 years...
| Mineral: | Fluorite with Quartz |
| Locality: | | Ruyuan Fluorite Mine, Ruyuan, Shaoguan Prefecture, Guangdong Province, China | |
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| Dimensions: | 97 x 87 x 67 mm |
| Description: |
A group of highly-lustrous, light-green Fluorite crystals to 16 mm is richly coated with numerous sharp, whitish Quartz points to 18 x 10 mm. These Fluorites are highly transparent, and the cubes have dodectahedral modifications. Small white grains of Quartz are included within these very glassy Fluorites, and some seem to be preferentially oriented. It is an excellent specimen, supposedly from a small 2013 find, and damage free.
The Quartz shows strong orange fluorescence in LW. |
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17725 Time(s) |
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| Mineral: | Quartz (pseudo Calcite) with Quartz |
| Locality: | | Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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| Dimensions: | 173 x 122 x 63 mm |
| Description: |
| Lustrous, rich-medium-green, opaque, tabular blades of Quartz pseudomorphing Calcite to 62 mm across. Several of the weird green Quartz crystals to 14 x 11 mm across, erroneously called beta-Quartz from this locality, are perched on the reverse. In excelllent condition, and a near complete floater. |
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17726 Time(s) |
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| Mineral: | Fluorite with Calcite |
| Locality: | | Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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| Dimensions: | 94 x 89 x 61 mm |
| Description: |
| This fine stalactite of lustrous, translucent, lilac-purple, rounded crystals of Fluorite to 11 mm across is accented with blades of off-white Calcite to 10 mm across. This lilac color is uncommon for this Inner Mongolia locality. In excellent condition, it displays well from all sides. |
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17707 Time(s) |
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| Mineral: | Fluorite on Quartz |
| Locality: | | Wutong Mine, Liubao, Cangwu, Wuzhou Prefecture, Guangxi Zhuang Autonomous Region, China | |
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| Dimensions: | 106 x 79 x 48 mm |
| Description: |
| Intergrown, complex crystals of light-green, translucent Fluorite to 39 mm across are perched on highly-lustrous, bright-white, opaque Quartz points to 10 mm across. The Quartz matrix is largely recrystallized all around. In excellent condition, this is an unique sample from this Rhodochrosite locality not well known for producing nice Fluorite specimens. |
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17694 Time(s) |
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| Mineral: | Spessartine on Orthoclase |
| Locality: | | Wushan Spessartine prospects, Tongbei, Yunxiao, Zhangzhou Prefecture, Fujian Province, China | |
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| Dimensions: | 89 x 60 x 45 mm |
| Description: |
| Lustrous, gemmy-orange Spessartine garnets to 3.5 mm across are perched on lustrous, cream-colored crystals of Microcline. The most prominent Microcline is 18 x 17 x 15 mm in size, and is somewhat embayed and corroded, yielding an unusual and attractive form. Nice aesthetics and free of damage. |
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17690 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4235
Location: Germany
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| Posted: Feb 27, 2017 01:50 Post subject: Re: Bob's rocks - Chinese minerals |
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| GneissWare wrote: | | A few Chinese minerals from the past 2 years... |
Wonderful! My favourite is the 17 cm quartz pseudomorph after calcite from Huanggang - a spectacular specimen!
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