View previous topic :: View next topic |
Author |
Message |
Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
|
Posted: May 31, 2014 16:39 Post subject: Re: Don Lum Collection |
|
|
Congratulations on your nice Brandberg amethyst Don.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: May 31, 2014 17:58 Post subject: Re: Don Lum Collection |
|
|
Pierre Joubert wrote: | Congratulations on your nice Brandberg amethyst Don. |
Thank you very much, Pierre. I hope Riana is feeling better.
Regards,
Don
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 01, 2014 13:41 Post subject: Re: Don Lum Collection |
|
|
Mr. John S. White published an article in the May/June issue of Rocks and Minerals on Polyhedroid Agates. This inspired me to look at the few pieces that I collected a number of years ago and to my surprise was able to find them. Mr. White writes about how they are formed and the other names which one might find in the literature such as pseudo-agate, polyhydrolithe, and polyhedric quartz or quartz polyhedroids or even box quartz. Other names which are used are Paraiba-agate and polygonal quartz.
Mr. White notes, "The most famous and probably the most prolific source for polyhedroids is the Garguelo Farm south-southwest of Cajazeiras, in the Municipe de Cachieura dos Indios, Paraiba, Brazil."
My specimens came with a label Paraiba, Brazil as the location. They are polished slices.
Description: |
Quartz variety agate Paraiba, Brazil 16.7 x 5.7 cm Polyhedroid agate |
|
Viewed: |
27691 Time(s) |
|
Description: |
Quartz variety agate Paraiba, Brazil 10 .2 x 9.3 cm Polyhedroid agate |
|
Viewed: |
27728 Time(s) |
|
Description: |
Quartz variety agate Paraiba, Brazil 9.3 x 6.5 cm Polyhedroid agate |
|
Viewed: |
27715 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
|
Posted: Jun 02, 2014 03:05 Post subject: Re: Don Lum Collection |
|
|
Hi Don. I find these agates fascinating (the outward facets). Thank you for showing.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 02, 2014 09:21 Post subject: Re: Don Lum Collection |
|
|
Pierre Joubert wrote: | Hi Don. I find these agates fascinating (the outward facets). Thank you for showing. |
Hello Pierre,
Thank you for for nice comment.
I have been enjoying your posts and unusual finds.
Hello to Riana.
Don
_________________ hogwild |
|
Back to top |
|
|
Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
|
Posted: Jun 02, 2014 12:21 Post subject: Re: Don Lum Collection |
|
|
Don Lum wrote: | Pierre Joubert wrote: | Hi Don. I find these agates fascinating (the outward facets). Thank you for showing. |
Hello Pierre,
Thank you for for nice comment.
I have been enjoying your posts and unusual finds.
Hello to Riana.
Don |
Hi Don. Thank you for your kind regards. I searched these agates and found Mr. White's article.
https://www.rocksandminerals.org/Back%20Issues/2014/May-June%202014/mineral-mysteries-abstract.html
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 02, 2014 13:13 Post subject: Re: Don Lum Collection |
|
|
Polyhedroid Agates
Description: |
Quartz var agate Paraiba, Brazil 10.2 x 5.3 cm Polyhedroid Agate |
|
Viewed: |
27806 Time(s) |
|
Description: |
Quartz var agate Paraiba, Brazil 12.5 x 8.3 cm Polyhedroid Agate |
|
Viewed: |
27668 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 03, 2014 13:41 Post subject: Re: Don Lum Collection |
|
|
Goethite (FeO(OH) named after the German polymath and poet Johann Wolfgang von Goethe (1749–1832), an iron bearing hydroxide mineral of the diaspore group, is found in soil and other low-temperature environments. Goethite has been well known since prehistoric times for its use as a pigment (ochre). Evidence has been found of its use in paint pigment samples taken from the caves of Lascaux in France. It was first described in 1806 for occurrences in the Hollertszug Mine, Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany. (ref Wikipedia)
Description: |
Goethite, Quartz Amerzgane, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 15 x 12 cm, 12.7 x 8.6 cm Concave geode lined with colorless quartz crystals with sprays of divergent and radiating black lustrous metallic clusters of acicular goethite crystals. |
|
Viewed: |
27515 Time(s) |
|
Description: |
Goethite, Quartz Amerzgane, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 15 x 12 cm, 12.7 x 8.6 cm |
|
Viewed: |
27551 Time(s) |
|
Description: |
Vanadinite, Manganese Oxides Taouz, Er Rachidia, Meknès-Tafilalet, Morocco 9 x 7.5 x 7 cm |
|
Viewed: |
27511 Time(s) |
|
Description: |
Vanadinite, Manganese Oxides Taouz, Er Rachidia, Meknès-Tafilalet, Morocco 9 x 7.5 x 7 cm |
|
Viewed: |
27520 Time(s) |
|
Description: |
Vanadinite, Manganese Oxides Taouz, Er Rachidia, Meknès-Tafilalet, Morocco 9 x 7.5 x 7 cm |
|
Viewed: |
27558 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2060
Location: Oklahoma
|
Posted: Jun 03, 2014 14:50 Post subject: Re: Don Lum Collection |
|
|
That is a nice group of polyhedroids Don. Made all the more interesting by John White's recent article in R&M.
Michael
|
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 03, 2014 14:56 Post subject: Re: Don Lum Collection |
|
|
crosstimber wrote: | That is a nice group of polyhedroids Don. Made all the more interesting by John White's recent article in R&M.
Michael |
Thank you, Michael. I enjoyed Mr. White's article.
Hello to Laura.
Don
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 04, 2014 12:55 Post subject: Re: Don Lum Collection |
|
|
Goethite
Description: |
Goethite Montreal Mine, 35th Level, Montreal, Iron County, Wisconsin, USA 8.7 x 5.1 cm |
|
Viewed: |
27453 Time(s) |
|
Description: |
Goethite Montreal Mine, 35th Level, Montreal, Iron County, Wisconsin, USA 8.7 x 5.1 cm |
|
Viewed: |
27819 Time(s) |
|
Description: |
Goethite Garland County, Arkansas, USA 6.7 x 4.3 cm |
|
Viewed: |
27475 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 06, 2014 20:04 Post subject: Re: Don Lum Collection |
|
|
Amazonite and Smoky Quartz
Description: |
Microcline var amazonite, Quartz var smoky Bear Creek,, El Paso County, Colorado, USA 9 x 8.7 cm |
|
Viewed: |
27293 Time(s) |
|
Description: |
Microcline var amazonite, Quartz var smoky Bear Creek,, El Paso County, Colorado, USA 9 x 8.7 cm. |
|
Viewed: |
27325 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 06, 2014 20:13 Post subject: Re: Don Lum Collection |
|
|
Copper
Description: |
Copper Cole Shaft, Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA 7.0 x 6.0 cm cubic copper crystals |
|
Viewed: |
27316 Time(s) |
|
Description: |
Copper Cole Shaft, Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA 7.0 x 6.0 cm cubic copper crystals |
|
Viewed: |
27300 Time(s) |
|
Description: |
Copper Cole Shaft, Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA 7.0 x 6.0 cm cubic copper crystals |
|
Viewed: |
27329 Time(s) |
|
Description: |
Copper Phoenix Mine, Phoenix, Keweenaw County, Michigan, USA 5.0 x 3.0 cm |
|
Viewed: |
27316 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 07, 2014 06:40 Post subject: Re: Don Lum Collection |
|
|
Copper
Description: |
Copper Ray Mine, Pinal County, Arizona, USA 5.3 x 4.0 cm |
|
Viewed: |
27226 Time(s) |
|
Description: |
Copper Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia 5.1 x 4.8 cm |
|
Viewed: |
27221 Time(s) |
|
Description: |
Copper, Cuprite Rubtsovskoe Cu-Zn-Pb Deposit, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia 6.0 x 3.0 cm |
|
Viewed: |
27196 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2060
Location: Oklahoma
|
Posted: Jun 07, 2014 09:09 Post subject: Re: Don Lum Collection |
|
|
Nice cubic copper crystals from the Cole Shaft.
|
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 07, 2014 09:17 Post subject: Re: Don Lum Collection |
|
|
crosstimber wrote: | Nice cubic copper crystals from the Cole Shaft. |
Thank you, Michael.
Hello to Laura.
Don
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 07, 2014 18:03 Post subject: Re: Don Lum Collection |
|
|
Re-do of previously posted specimen. Better picture.
Description: |
Copper Phoenix Mine, Phoenix, Keweenaw County, Michigan, USA 5.0 x 3.0 cm |
|
Viewed: |
27062 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2854
Location: Arkansas
|
Posted: Jun 08, 2014 10:16 Post subject: Re: Don Lum Collection |
|
|
Copper
Description: |
Copper Ojibway Mine, Ojibway, Keweenaw County, Michigan, USA 4.3 x 3.3 cm |
|
Viewed: |
27078 Time(s) |
|
Description: |
Copper Central Mine, Central, Keweenaw County, Michigan, USA 4.3 x 3.1 cm |
|
Viewed: |
27043 Time(s) |
|
Description: |
Copper pseudomorph after cuprite Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia 4.3 x 3.0 cm |
|
Viewed: |
27101 Time(s) |
|
Description: |
Copper pseudomorph after cuprite Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia 4.3 x 3.0 cm |
|
Viewed: |
27029 Time(s) |
|
Description: |
Copper pseudomorph after cuprite Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia 4.3 x 3.0 cm |
|
Viewed: |
27040 Time(s) |
|
_________________ hogwild |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2060
Location: Oklahoma
|
Posted: Jun 08, 2014 10:27 Post subject: Re: Don Lum Collection |
|
|
I have a soft spot for Michigan coppers ever since I collected there as a boy many years ago. I love the crystallization on your Ojibway copper - nice piece.
Michael
|
|
Back to top |
|
|
|