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27 Mar-19:47:08 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Pete Richards)
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27 Mar-15:18:59 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Alfredo)
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27 Mar-02:39:50 Re: the mim museum in beirut, lebanon (Tobi)
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25 Mar-00:25:58 The mizunaka collection - quartz (Am Mizunaka)
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22 Mar-04:20:41 Re: the mim museum in beirut, lebanon (Mim Museum)
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21 Mar-22:45:25 Re: green seam. Looks like it in a state of decay. (Ning)
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21 Mar-14:15:36 The 4th phoenix heritage mineral show (phms) hosted by mineralogical society of arizona (m (Chris Whitney-smith)
21 Mar-04:36:10 Re: the mizunaka collection (Tobi)
21 Mar-04:11:47 Re: jim’s mineral collection (James Catmur)
20 Mar-23:34:15 The mizunaka collection - quartz (Am Mizunaka)
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Bob's rocks
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Mike Wood




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PostPosted: Feb 01, 2016 18:55    Post subject: Re: Bob's rocks  

Wonderful laumontite specimen Bob
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GneissWare




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PostPosted: Mar 01, 2016 18:34    Post subject: Bob's rocks - Diamond  

A pair of well-formed, lustrous, opaque to translucent, brownish-yellow Diamond cubes with interpenetrant growth. The largest cube measures 9 x 8 x 8 mm. The faces are multicrystalline, giving the appearance of fine pitting. Sometimes referred to as Congo Cubes, these cubes are surprisingly sharp for this locality, and the twinning makes for a striking specimen. Purchased in 1995, this specimen has been tucked away for many years in my collection. Weight 13.6 carats.


RG0292a.jpg
 Mineral: Diamond
 Locality:
Miba Mine, Mbuji Mayi (Bakwanga), Kasaï Oriental, Democratic Republic of the Congo (Zaire)
 Dimensions: 15 x 11 x 10 mm
 Description:
 Viewed:  26080 Time(s)

RG0292a.jpg



RG0292c.jpg
 Mineral: Diamond
 Locality:
Miba Mine, Mbuji Mayi (Bakwanga), Kasaï Oriental, Democratic Republic of the Congo (Zaire)
 Dimensions: 15 x 11 x 10 mm
 Description:
 Viewed:  26065 Time(s)

RG0292c.jpg



RG0292e.jpg
 Mineral: Diamond
 Locality:
Miba Mine, Mbuji Mayi (Bakwanga), Kasaï Oriental, Democratic Republic of the Congo (Zaire)
 Dimensions: 15 x 11 x 10 mm
 Description:
 Viewed:  26107 Time(s)

RG0292e.jpg


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GneissWare




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PostPosted: Mar 01, 2016 18:42    Post subject: Bob's rocks - Wulfenites from Stevenson-Bennett Mine  

...


RG0468a.jpg
 Mineral: Wulfenite
 Locality:
Stevenson-Bennett Mine, Organ Mountains, Organ District, Doña Ana County, New Mexico, USA
 Dimensions: 63 x 55 x 42 mm
 Description:
Many lustrous, butterscotch to orange-yellow, blocky crystals of Wulfenite, to 6 mm across, cover a bed of white Calcite crystals on matrix. Most of the Wulfenites show slightly darker cores. This nice specimen from this now closed, classic American locality was collected in March 1991 by Tom and Glenn Hales.
 Viewed:  26098 Time(s)

RG0468a.jpg



RG0474a.jpg
 Mineral: Wulfenite
 Locality:
Stevenson-Bennett Mine, Organ Mountains, Organ District, Doña Ana County, New Mexico, USA
 Dimensions: 34 x 27 x 18 mm
 Description:
A cluster of blocky, arrowhead-shaped Wulfenite crystals, to 10 x 10 x 6 mm. The Wulfenites range in color from brown with less luster to orange with pearly luster. This specimen from this now closed, classic American locality was collected in March 1991 by Tom and Glenn Hales.
 Viewed:  26078 Time(s)

RG0474a.jpg


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Don Lum




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PostPosted: Mar 01, 2016 18:58    Post subject: Re: Bob's rocks  

Extraordinary diamond twin cubes and Wulfenites, Bob. I enjoy seeing them.

Don

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Jamison Brizendine




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PostPosted: Mar 02, 2016 11:35    Post subject: Re: Bob's rocks  

Looking at the diamond, I would have never guessed that one correctly! That is a very neat oddity...

The wulfenites are also very attractive.
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Pierre Joubert




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PostPosted: Mar 02, 2016 14:16    Post subject: Re: Bob's rocks  

Hi Bob. I am also intrigued by the diamond specimen. Do you know what that pinkish colour on it is? Regards.
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GneissWare




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PostPosted: Mar 02, 2016 16:00    Post subject: Re: Bob's rocks  

It is "clay" of some sort. After the photos were taken, I was able to remove some of it with air abrasion.
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GneissWare




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PostPosted: Mar 02, 2016 20:04    Post subject: Bob's rocks - Arizona  

A few from Arizona


RG0279a.jpg
 Mineral: Hemimorphite with Aurichalcite(?)
 Locality:
Silver Hill Mine group, Waterman District, Waterman Mountains, Pima County, Arizona, USA
 Dimensions: 66 x 63 x 43 mm
 Description:
Satiny, greenish-blue crusts of Hemimorphite fill vugs on contracting dark matrix, accented with fine, hair-like crystals of Aurichalcite(?) and light-green massive Malachite. Collected circa 1968, it was purchased by Bob Lane in 1986, and in my collection since 1987.
 Viewed:  25911 Time(s)

RG0279a.jpg



RG0280a.jpg
 Mineral: Calcite
 Locality:
Twin Buttes Mine, Twin Buttes, Pima mining district, Sierrita Mountains, Pima County, Arizona, USA
 Dimensions: 90 x 69 x 42
 Description:
A fine cluster of lustrous, creamy-white, translucent scalenahedrons of Calcite to 17 mm long. There are a few damaged crystal tips on one part of the specimen, but are of little consequence as specimens of this quality are never seen from this Arizona mine. Collected by Stan Keith in 1972 during early exploration activities.
 Viewed:  25942 Time(s)

RG0280a.jpg



RG0740a.jpg
 Mineral: Pyrite
 Locality:
Mission Mine, Mission complex, San Xavier, Pima mining district, Sierrita Mountains, Pima County, Arizona, USA
 Dimensions: 33 x 33 x 26 mm
 Description:
A rare, brassy Pyrtite crystal from the Mission Mine complex in Arizona, it is blocky in form and a complete floater. The surfaces are covered with fine solution features. Formerly in the Bill Williams and Fred Rhodes collections, it was collected by Fred Rhodes from the 2970 Bench in the late 1980s. It is in perfect condition.
 Viewed:  25953 Time(s)

RG0740a.jpg



RG0742a.jpg
 Mineral: Wulfenite with Calcite on Barite
 Locality:
Pure Potential Mine, Silver District, Trigo Mountains, La Paz County, Arizona, USA
 Dimensions: 70 x 37 x 39
 Description:
Lustrous, bright-red blades of Wulfenite to 7 mm are perched on bladed Baryte matrix, and is adorned by pearly-white blades of Calcite to 4 mm. The Baryte is accented with sparkling red microcrystals of Mimetite. This very attractive and undamaged specimen was collected in 1992 by Chris Lehmann.
 Viewed:  25906 Time(s)

RG0742a.jpg



RG0747a.jpg
 Mineral: Quartz
 Locality:
Scepter Hill, California Gulch, Ruby, Oro Blanco District, Oro Blanco Mountains, Santa Cruz County, Arizona, USA
 Dimensions: 63 x 18 x 16 mm
 Description:
Lustrous, glassy, doubly-terminated crystal of Quartz to 63 mm long from this Arizona locality known for its scepters. There are slight skeletal features at the terminations, and a very pale amethystine coloration. Much nicer than the photos show, this is ex. Fred Rhodes collection and was field collected by him in 1993.
 Viewed:  25926 Time(s)

RG0747a.jpg


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Philip Simmons




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PostPosted: Mar 02, 2016 23:29    Post subject: Re: Bob's rocks  

Hi Bob,

I love your SB wulfenites. Keep the minerals coming!

Phil
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GneissWare




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PostPosted: May 23, 2016 09:10    Post subject: Bob's rocks - Beryl (v. Morganite) from California USA  

This is reportedly one of the largest (if not the largest) Morganites found in California. It was found in 2005 by Dana and Ken Gochenour, and bought the same year by Al Ordway. Al kept it in his collection until his death in 2007. I acquired it in 2016.


IMG_5079.JPG
 Mineral: Beryl (var. Morganite) with Quartz and Albite
 Locality:
Cryo-Genie Mine, Warner Springs, Warner Springs District, San Diego County, California, USA
 Dimensions: 150 x 118 x 113 mm
 Description:
Beryl is 113 x 105 x 93 mm
Quartz is 136 x 66 x 55 mm
 Viewed:  25539 Time(s)

IMG_5079.JPG



IMG_5080.JPG
 Mineral: Beryl (var. Morganite) with Quartz and Albite
 Locality:
Cryo-Genie Mine, Warner Springs, Warner Springs District, San Diego County, California, USA
 Dimensions: 150 x 118 x 113 mm
 Description:
Traditional geologist necessity for scale
 Viewed:  25385 Time(s)

IMG_5080.JPG


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Tobi
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PostPosted: May 23, 2016 09:32    Post subject: Re: Bob's rocks  

AWESOME PIECE!!!
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GneissWare




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PostPosted: May 23, 2016 10:08    Post subject: Re: Bob's rocks  

Also proves that minerals are better with a good hefeweizen
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Tobi
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PostPosted: May 23, 2016 10:28    Post subject: Re: Bob's rocks  

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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PostPosted: Jun 19, 2016 23:53    Post subject: Bob's rocks - Galena pseudomorph Peru  

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.


IMG_5613a.jpg
 Mineral: Galena (after Stibnite ) on Barite
 Locality:
San Genaro Mine, Castrovirreyna District, Castrovirreyna Province, Huancavelica Department, Peru
 Dimensions: 118 x 100 x 60 mm
 Description:
 Viewed:  25096 Time(s)

IMG_5613a.jpg


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GneissWare




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PostPosted: Jan 17, 2017 23:17    Post subject: Bob's rocks - Azurite from Zambia  

..


RG1495.jpg
 Mineral: Azurite with Malachite
 Locality:
Nchanga Mine, Chingola, Chingola District, Copperbelt Province, Zambia
 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.
 Viewed:  23464 Time(s)

RG1495.jpg


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GneissWare




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PostPosted: Jan 18, 2017 20:31    Post subject: Bob's rocks - Fluorite from Cady Mts., California  

..


RG1489.jpg
 Mineral: Fluorite
 Locality:
Afton Canyon, Afton, Cady Mountains, San Bernardino County, California, USA
 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.
 Viewed:  23337 Time(s)

RG1489.jpg


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GneissWare




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PostPosted: Jan 22, 2017 12:56    Post subject: Bob's rocks - garnet from Mali  

..


RG1490.jpg
 Mineral: Andradite-Grossular Series
 Locality:
Kayes Region, Mali
 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.
 Viewed:  23111 Time(s)

RG1490.jpg


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roswellrockman




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PostPosted: Jan 24, 2017 19:39    Post subject: Re: Bob's rocks  

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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PostPosted: Jan 24, 2017 20:05    Post subject: Re: Bob's rocks  

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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PostPosted: Feb 23, 2017 22:52    Post subject: Bob's rocks - Yaogangxian Fluorite  

...


RG1503.JPG
 Mineral: Fluorite on Quartz with Chalcopyrite
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 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.
 Viewed:  22610 Time(s)

RG1503.JPG


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