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Mike Wood
Joined: 16 Dec 2010
Posts: 456
Location: Northern England
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Posted: May 13, 2014 17:03 Post subject: Re: The collection of Pierre and Riana Joubert |
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Hello Pierre, very nice specimens and photo's as usual! I really like the Brandburg amythest and smoky quartz crystals, they have fascinating internal structure and colour, and superb lustre.
Mike
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am mizunaka
Joined: 09 Apr 2010
Posts: 2026
Location: USA
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Posted: May 13, 2014 23:52 Post subject: Re: The collection of Pierre and Riana Joubert |
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Very nice quartz and tourmaline piece. I also really like the smoky quartz from Brandberg.
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: May 14, 2014 02:16 Post subject: Re: The collection of Pierre and Riana Joubert |
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Hi Mike and Am, thank you for the compliments. Needless to say that I thoroughly enjoy both of your contributions.
_________________ Pierre Joubert
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: May 14, 2014 06:50 Post subject: Re: The collection of Pierre and Riana Joubert |
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Next up is 3 specimens of self collected Feldspar (variety adularia) and quartz. These are of the best I have collected from mentioned area.
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Feldspar (var. adularia) and quartz Vredendal Lime Quarry, Western Cape, South Africa 34 x 25 x 22 mm |
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23532 Time(s) |
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Feldspar (var. adularia) and quartz Vredendal Lime Quarry, Western Cape, South Africa 34 x 25 x 22 mm Same as above. |
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Feldspar (var. adularia) and quartz Vredendal Lime Quarry, Western Cape, South Africa 34 x 25 x 22 mm Same as above. |
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23572 Time(s) |
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Quartz, feldspar (var. adularia) and rutile Vredendal Lime Quarry, Western Cape, South Africa 53 x 40 x 26 mm |
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23554 Time(s) |
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Quartz, feldspar (var. adularia) and rutile Vredendal Lime Quarry, Western Cape, South Africa 53 x 40 x 26 mm Same as above. |
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23516 Time(s) |
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Quartz, feldspar (var. adularia) and rutile Vredendal Lime Quarry, Western Cape, South Africa 53 x 40 x 26 mm Same as above. |
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23559 Time(s) |
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Quartz, feldspar (var. adularia) Vredendal Lime Quarry, Western Cape, South Africa 35 x 28 x 20 mm |
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23573 Time(s) |
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Quartz, feldspar (var. adularia) Vredendal Lime Quarry, Western Cape, South Africa 35 x 28 x 20 mm Same as above. |
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23535 Time(s) |
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Quartz, feldspar (var. adularia) Vredendal Lime Quarry, Western Cape, South Africa 35 x 28 x 20 mm Same as above. |
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23703 Time(s) |
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_________________ Pierre Joubert
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 01, 2014 10:01 Post subject: Re: The collection of Pierre and Riana Joubert |
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A few more specimens from our collection.
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Sanidine Madagascar 27 x 18 x 14 mm |
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23400 Time(s) |
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Sanidine Madagascar 27 x 18 x 14 mm Same as above. |
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Sanidine Madagascar 27 x 18 x 14 mm Same as above. |
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Quartz var. amethyst Brandberg, Namibia 31 x 19 x 17 mm Amethyst quartz crystal. |
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23428 Time(s) |
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Quartz var. amethyst Brandberg, Namibia 31 x 19 x 17 mm Same as above. |
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Quartz var. amethyst Brandberg, Namibia 31 x 19 x 17 mm Same as above. |
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Quartz var. smoky, Aegirine and feldspar. Mount Malosa, Zomba, Malawi. 65 x 38 x 33 mm |
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Quartz var. smoky, Aegirine and feldspar. Mount Malosa, Zomba, Malawi. 65 x 38 x 33 mm Same as above. |
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23369 Time(s) |
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Quartz var. smoky, Aegirine and feldspar. Mount Malosa, Zomba, Malawi. 65 x 38 x 33 mm Same as above. |
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23414 Time(s) |
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Quartz var. smoky, feldspar, dolomite and rutile Van Rhynsdorp, Western Cape South Africa. 195 x 160 x 130 mm One of the larger specimens of quartz that I collected. It weighs just more than 3 kg. |
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Quartz var. smoky, feldspar, dolomite and rutile Van Rhynsdorp, Western Cape, South Africa. 195 x 160 x 130 mm Same as above. |
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23353 Time(s) |
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Quartz var. smoky, feldspar, dolomite and rutile Van Rhynsdorp, Western Cape, South Africa. 195 x 160 x 130 mm Rutile in and on Quartz. Same as above. |
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23368 Time(s) |
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Quartz var. smoky, feldspar, dolomite and rutile Van Rhynsdorp, Western Cape, South Africa. 195 x 160 x 130 mm Same as above. |
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23316 Time(s) |
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Quartz var. smoky, feldspar, dolomite and rutile Van Rhynsdorp, Western Cape, South Africa. 195 x 160 x 130 mm Same as above. |
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23345 Time(s) |
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_________________ Pierre Joubert
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 01, 2014 10:22 Post subject: Re: The collection of Pierre and Riana Joubert |
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A few more.
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Quartz var. smoky Erongo Mountain, Erongo Region, Namibia 178 x 74 x 45 mm |
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23350 Time(s) |
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Quartz var. smoky Erongo Mountain, Erongo Region, Namibia 178 x 74 x 45 mm Same as above. |
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23385 Time(s) |
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Quartz var. smoky Erongo Mountain, Erongo Region, Namibia 178 x 74 x 45 mm Same as above. |
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23373 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 39 x 27 x 21 mm |
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23366 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 39 x 27 x 21 mm Same as above. |
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23340 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 39 x 27 x 21 mm Same as above. |
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23373 Time(s) |
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Quartz var. smoky/citrine Erongo Mountain, Erongo Region, Namibia 71 x 16 x 12 mm 'Chisel' quartz |
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23322 Time(s) |
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Quartz var. smoky/citrine Erongo Mountain, Erongo Region, Namibia 71 x 16 x 12 mm Same as above. |
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23362 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 57 x 40 x 36 mm |
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23350 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 57 x 40 x 36 mm Same as above. |
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23314 Time(s) |
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Quartz var. smoky and Aegirine Mount Malosa, Zomba, Malawi. 57 x 40 x 36 mm Same as above. |
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23341 Time(s) |
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Quartz var. smoky Brandberg, Erongo, Namibia 23 x 15 x 15 mm A neat light smoky crystal with inverted crystals and water. |
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23358 Time(s) |
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Quartz var. smoky Brandberg, Erongo, Namibia 23 x 15 x 15 mm Same as above. |
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23311 Time(s) |
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Quartz var. smoky Brandberg, Erongo, Namibia 23 x 15 x 15 mm Same as above. |
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23301 Time(s) |
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_________________ Pierre Joubert
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4888
Location: Barcelona
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Posted: Jun 01, 2014 11:43 Post subject: Re: The collection of Pierre and Riana Joubert |
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Pierre Joubert wrote: | Kornerupine
Madagascar
27 x 18 x 14 mm |
Pierre,
Your "Kornerupine" looks a lot as Sanidine, please see: https://www.mindat.org/gallery.php?loc=2273&min=3521
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Joan Martinez Bruguera
Joined: 13 Dec 2012
Posts: 62
Location: Sant Esteve de Palautordera (Barcelona)
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Posted: Jun 01, 2014 12:41 Post subject: Re: The collection of Pierre and Riana Joubert |
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Congratulations friend Pierre, for minerals show us!
I really like the photo Quartz P1310815
Continues to show more photos.
Best regards;-)
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Duncan Miller
Joined: 25 Apr 2009
Posts: 138
Location: South Africa
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Posted: Jun 01, 2014 12:49 Post subject: Re: The collection of Pierre and Riana Joubert |
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Hi Pierre - Nice Vredendal adularia specimens! I agree with Jordi that your 'kornerupine' looks like sanidine, on the basis of colour, lustre and cleavage. I have several similar gemmy specimens (formerly described as orthoclase) from Madagascar. Duncan
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 01, 2014 13:00 Post subject: Re: The collection of Pierre and Riana Joubert |
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Hi Jordi. Thank you! Will you please change the label? What is the difference between Sandine and Moonstone?
Hi Joan. Thank you for your comment. This specimen is close to my heart as it is a large and complex specimen that came from the back of a deep pocket.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 01, 2014 13:05 Post subject: Re: The collection of Pierre and Riana Joubert |
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xenolithos wrote: |
Hi Pierre - Nice Vredendal adularia specimens! I agree with Jordi that your 'kornerupine' looks like sanidine, on the basis of colour, lustre and cleavage. I have several similar gemmy specimens (formerly described as orthoclase) from Madagascar. Duncan |
Hi Duncan. Nice to hear from you. Thank you for confirming Jordi's comment.
_________________ Pierre Joubert
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Mike Wood
Joined: 16 Dec 2010
Posts: 456
Location: Northern England
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Posted: Jun 02, 2014 16:54 Post subject: Re: The collection of Pierre and Riana Joubert |
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Very nice additions to your collection Pierre and Riana, and really good photo's too. Thanks for showing them.
Q. What kind of rock does the Vredendal Lime Quarry extract? Presumably it's for the production of cement mortar, or even lime mortar?
Thanks, Mike.
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 03, 2014 02:43 Post subject: Re: The collection of Pierre and Riana Joubert |
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Mike Wood wrote: | Very nice additions to your collection Pierre and Riana, and really good photo's too. Thanks for showing them.
Q. What kind of rock does the Vredendal Lime Quarry extract? Presumably it's for the production of cement mortar, or even lime mortar?
Thanks, Mike. |
Hi Mike, I am not sure what minerals are mined there. I think the main products are dolomite and feldspar. Perhaps Duncan can tell us more. The only access to the mine, for mineral collectors, is through a mineral club and that only once or twice a year.
_________________ Pierre Joubert
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Duncan Miller
Joined: 25 Apr 2009
Posts: 138
Location: South Africa
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 03, 2014 09:28 Post subject: Re: The collection of Pierre and Riana Joubert |
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Thank you Duncan!
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Mike Wood
Joined: 16 Dec 2010
Posts: 456
Location: Northern England
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Posted: Jun 03, 2014 12:11 Post subject: Re: The collection of Pierre and Riana Joubert |
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Thank you Duncan and Pierre, I read the article; looks like the quarry is for dolomite then, for the purpose of making refractory 'bricks' - presumably for lining furnaces and probably for the steel industry.
The by-products of the quarry are rather more interesting!
Thanks again, Mike
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 05, 2014 14:13 Post subject: Re: The collection of Pierre and Riana Joubert |
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I am adding yet another one of those remarkable quartz specimens from Brandberg. These surfaced a good number of years ago and as far as I know, not again.
Description: |
Quartz var. amethyst with calcite Brandberg, Namibia 50 x 41 x 30 mm Amethyst quartz and calcite on basalt |
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22873 Time(s) |
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Quartz var. amethyst with calcite Brandberg, Namibia 50 x 41 x 30 mm Same as above. |
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22865 Time(s) |
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Description: |
Quartz var. amethyst with calcite Brandberg, Namibia 50 x 41 x 30 mm Same as above. |
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22852 Time(s) |
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Description: |
Quartz var. amethyst with calcite Brandberg, Namibia 50 x 41 x 30 mm Same as above. |
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22890 Time(s) |
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_________________ Pierre Joubert
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Don Lum
Joined: 03 Sep 2012
Posts: 2853
Location: Arkansas
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Posted: Jun 05, 2014 16:18 Post subject: Re: The collection of Pierre and Riana Joubert |
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Hi Pierre and Riana.
I like your amethyst and calcite on basalt specimen. Very nice.
Best wishes.
Don
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Mike Wood
Joined: 16 Dec 2010
Posts: 456
Location: Northern England
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Posted: Jun 05, 2014 17:54 Post subject: Re: The collection of Pierre and Riana Joubert |
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Remarkable specimen Pierre!
Just one question - Would it be possible to raise the Mb on the camera so we can zoom in on your specimens? The photo's are excellent and clear and would be great to zoom in on.
Regards,
Mike :-)
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Jun 06, 2014 03:19 Post subject: Re: The collection of Pierre and Riana Joubert |
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Mike Wood wrote: | Remarkable specimen Pierre!
Just one question - Would it be possible to raise the Mb on the camera so we can zoom in on your specimens? The photo's are excellent and clear and would be great to zoom in on.
Regards,
Mike :-) |
We have a limit on our data. What size would you suggest?
Thank you very much for your ckind comment Dr Don:-)
_________________ Pierre Joubert
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