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Debbie Woolf
Joined: 09 Feb 2009
Posts: 168
Location: Kent
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 Posted: Feb 24, 2014 08:20 Post subject: Re: Unknown crystal in Brandberg quartz crystal |
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| I look forward to seeing the photos someday.
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cascaillou
Joined: 27 Nov 2011
Posts: 263
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| Posted: Feb 24, 2014 14:50 Post subject: Re: Unknown crystal in Brandberg quartz crystal |
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Pierre, if you're interested in inclusions you will like:
Magic World: Inclusions in Quartz (by Jaroslav Hyrsl and Gerhard Niedermayr)
This book is only about inclusions in quartz
Photoatlas of Inclusions in Gemstones, 3 volumes (by Eduard J. Gubelin and John I. Koivula)
All three volumes are excellent, and each of these cover all kind of inclusions found in many different gemstones. But you might be first interested in the second volume which has 124 pages about inclusions in quartz.
The Microworld of Diamonds (by John I. Koivula)
This one is only about inclusions in diamonds
Keep those books in mind for your birthday!
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Feb 25, 2014 00:48 Post subject: Re: Unknown crystal in Brandberg quartz crystal |
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| cascaillou wrote: | Pierre, if you're interested in inclusions you will like:
Magic World: Inclusions in Quartz (by Jaroslav Hyrsl and Gerhard Niedermayr)
This book is only about inclusions in quartz
Photoatlas of Inclusions in Gemstones, 3 volumes (by Eduard J. Gubelin and John I. Koivula)
All three volumes are excellent, and each of these cover all kind of inclusions found in many different gemstones. But you might be first interested in the second volume which has 124 pages about inclusions in quartz.
The Microworld of Diamonds (by John I. Koivula)
This one is only about inclusions in diamonds
Keep those books in mind for your birthday! |
Hi Cascaillou. I am indeed interested in quartz inclusions (very much so). I will join a club just for that. I will keep the books in mind and see if I can order them somewhere Regards:-)
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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: Apr 20, 2014 05:27 Post subject: Re: Unknown crystal in Brandberg quartz crystal |
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Hi Jordi. Is it possible to change the topic of this thread to' Oddities from Brandberg, Namibia'? This will allow me to show a few more different unusual minerals, most of which I do not know the identity of. By voorbaat dank!
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Pierre Joubert
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5070
Location: Barcelona
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| Posted: Apr 20, 2014 11:52 Post subject: Re: Oddities from Brandberg, Namibia |
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| Pierre Joubert wrote: | | Hi Jordi. Is it possible to change the topic of this thread to' Oddities from Brandberg, Namibia'? This will allow me to show a few more different unusual minerals, most of which I do not know the identity of. By voorbaat dank! |
Done!
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Apr 20, 2014 14:15 Post subject: Re: Oddities from Brandberg, Namibia |
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| Jordi Fabre wrote: | | Pierre Joubert wrote: | | Hi Jordi. Is it possible to change the topic of this thread to' Oddities from Brandberg, Namibia'? This will allow me to show a few more different unusual minerals, most of which I do not know the identity of. By voorbaat dank! |
Done! |
Thank you very much Jordi! I will continue with a specimen consisting of Quartz, Calcite, Epidote and an unknown mineral, perhaps Chrysocolla. Whatever it is, it is something I have never seen from Brandberg area.
| Description: |
Quartz, calcite, epidote, and an unknown mineral.
Brandberg, Namibia
40 x 38 x 28 mm
The calcite has two types of crystalization. |
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25970 Time(s) |
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| Description: |
Quartz, calcite, epidote and an unknown mineral.
Brandberg, Namibia
40 x 38 x 28 mm |
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| Viewed: |
25953 Time(s) |
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| Description: |
Quartz, calcite, epidote, and an unknown mineral.
Brandberg, Namibia
40 x 38 x 28 mm
same as above. |
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| Viewed: |
25962 Time(s) |
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| Description: |
unknown mineral on quartz
Brandberg, Namibia
F.O.V. approximately 9 mm |
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25972 Time(s) |
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| Description: |
unknown mineral
Brandberg, Namibia
F.O.V approximately 9 mm |
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| Viewed: |
26014 Time(s) |
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| Description: |
unknown mineral
Brandberg, Namibia
F.O.V approximately 9 mm |
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| Viewed: |
25956 Time(s) |
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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: Dec 02, 2014 10:13 Post subject: Re: Oddities from Brandberg, Namibia |
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Here is a quartz crystal with a few gas bubbles captured in water, gas inclusions and some unusual crystal inclusions. My guess is that it is feldspar or dolomite. I do not know what the green mineral is. What do you think?
I do not agree with Brandberg being part of the Erongo region. It may be geographically correct but it is confusing as the two areas yield a different variety of mineral species and it is a distance from each other. Erongo itself has a number of subdivision areas like Spitzkoppe, Neu Scwaben, Karibib and off course, the Erongo mountains.
| Mineral: | Quartz with unknown inclusions. |
| Dimensions: | 53 x 26 x 20 mm |
| Description: |
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| Viewed: |
25592 Time(s) |
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| Mineral: | Quartz with unknown inclusions. |
| Locality: | | Goboboseb Mountains, Brandberg area, Erongo Region, Namibia |  |
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| Dimensions: | F.O.V. about 10 x 09 mm |
| Description: |
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| Viewed: |
25547 Time(s) |
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| Mineral: | Quartz with unknown inclusions. |
| Locality: | | Goboboseb Mountains, Brandberg area, Erongo Region, Namibia | |
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| Dimensions: | F.O.V. about 10 x 09 mm |
| Description: |
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| Viewed: |
25594 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: Dec 03, 2014 02:43 Post subject: Re: Oddities from Brandberg, Namibia |
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I found another crystal with the same inclusions; possibly from the same batch.
| Mineral: | Quartz with unknown inclusions. |
| Locality: | | Brandberg area, Erongo Region, Namibia | |
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| Dimensions: | F.O.V approximately11 x 08 mm |
| Description: |
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| Viewed: |
25534 Time(s) |
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Pierre Joubert
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ploum
Joined: 12 Nov 2007
Posts: 1398
Location: Near Annecy
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| Posted: Dec 03, 2014 03:22 Post subject: Re: Oddities from Brandberg, Namibia |
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| I think hematite for inclusion
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Dec 03, 2014 03:50 Post subject: Re: Oddities from Brandberg, Namibia |
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| ploum wrote: | | I think hematite for inclusion |
Thank you. I am sorry, I should have been more specific. I am referring to the white cubic or triclinic(?) crystals. Best regards.
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Pierre Joubert
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Martin Rich
Joined: 15 Aug 2013
Posts: 127
Location: Lower Austria
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| Posted: Dec 03, 2014 16:23 Post subject: Re: Oddities from Brandberg, Namibia |
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Hello Pierre!
The white crystals could be adularia with minor green coating of a chlorite mineral.
Martin
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Dec 04, 2014 01:47 Post subject: Re: Oddities from Brandberg, Namibia |
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| Martin Rich wrote: | Hello Pierre!
The white crystals could be Adularia with minor green coating of a Chlorit mineral.
Martin |
Thank you Martin. You are most likely right.
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Pierre Joubert
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marco campos-venuti
Joined: 09 Apr 2014
Posts: 231
Location: Sevilla
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| Posted: Dec 09, 2014 07:39 Post subject: Re: Oddities from Brandberg, Namibia |
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| The shape reminds me more of a carbonate, such as calcite, siderite, or dolomite.
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Dec 09, 2014 07:58 Post subject: Re: Oddities from Brandberg, Namibia |
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| marco campos-venuti wrote: | | The shape remembers more of a carbonate, as calcite, siderite, dolomite. |
Hi Marco. Thank you for your interest. I found that dolomite and feldspar can be so similar when it comes to inclusions. Perhaps it is dolomite.
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Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5070
Location: Barcelona
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| Posted: Dec 09, 2014 08:25 Post subject: Re: Oddities from Brandberg, Namibia |
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| marco campos-venuti wrote: | | The shape remembers more of a carbonate, as calcite, siderite, dolomite. |
Probably not inside the Quartz due the formation temperature of the Quartz. A feldspar sounds more reasonable.
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