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10 Aug-13:36:06 Re: new administrator - peter farquhar (Don Lum)
10 Aug-13:29:28 Re: collection of michael shaw (Michael Shaw)
10 Aug-13:06:56 Re: new administrator - peter farquhar (Michael Shaw)
10 Aug-12:58:24 New administrator - peter farquhar (Peter Farquhar)
10 Aug-12:08:59 Re: calcite ? (Dany Mabillard)
10 Aug-12:03:25 Re: collection from dany mabillard (Dany Mabillard)
10 Aug-11:15:56 Re: don lum collection (Don Lum)
10 Aug-08:11:33 Re: popular minerals - twinned quartz (japan law twin) from colombia (Tobi)
10 Aug-08:06:36 Re: collection from dany mabillard (Tobi)
10 Aug-08:02:04 Re: don lum collection (Tobi)
10 Aug-01:45:42 Re: about cyclic twinning - (5) (James Catmur)
10 Aug-00:30:55 Re: calcite ? (Steveb)
09 Aug-23:07:54 Re: about cyclic twinning - (5) (Don Lum)
09 Aug-22:29:05 Re: about cyclic twinning - (5) (Kevin Conroy)
09 Aug-15:30:13 Re: about cyclic twinning - (5) (Don Lum)
09 Aug-14:38:08 Re: collection of sante celiberti - a mineralogical trip through italy (Sante Celiberti)
09 Aug-14:28:35 Re: about cyclic twinning - (5) (Kevin Conroy)
09 Aug-12:02:30 Re: about cyclic twinning - (5) (Bob Morgan)
09 Aug-11:36:21 Re: calcite ? (Michael Shaw)
09 Aug-11:27:41 Re: calcite ? (Vic Rzonca)
09 Aug-11:10:11 Re: help needed for chinese locations (Dany Mabillard)
09 Aug-09:47:12 Re: help needed for chinese locations (Volkmar Stingl)
09 Aug-09:33:00 Calcite ? (Dany Mabillard)
09 Aug-07:45:29 Re: help needed for chinese locations (Dany Mabillard)
08 Aug-23:25:53 Re: don lum collection (Don Lum)

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  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 28, 2018 12:33   Subject: Re: A new find: Hoganite from Morocco
The next thing we need to find out is whether the malachite is older or younger than the hoganite. If older, it could be that there was once more malachite and it has been partly etched away by acetic ...
  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 27, 2018 07:37   Subject: Re: A new find: Hoganite from Morocco
..... the malachite should be analyzed too, to make sure it's not really brochantite or other non-carbonate.

James, Alfredo

I attach the analysis executed by Joy Desor that confirms the presen ...
  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 27, 2018 02:34   Subject: Re: A new find: Hoganite from Morocco
Cesar, nice experiment !!

But I want to point out that some samples have fibrous malachite crystals, how did they form with the hoganite?

Manuel Mesa
  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 21, 2018 13:14   Subject: Re: A new find: Hoganite from Morocco
Pete Modreski, Alfredo

You're right, it's very strange. But keep in mind that the samples have been purchased directly from the miners in Morocco. They do not use acetic acid to clean the minerals. ...
  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 21, 2018 12:03   Subject: Re: A new find: Hoganite from Morocco
And of course, I attach the analysis:
  Topic: A new find: Hoganite from Morocco
Manuel Mesa

Replies: 17
Views: 13093

PostForum: Minerals and Mineralogy   Posted: Feb 21, 2018 11:57   Subject: A new find: Hoganite from Morocco
Today I would like to inform you about the presence of hoganite in the paragenesis of the Bou Nahas Mine (Morocco), and that I think this mineral will be talked about a lot and will be a point of disc ...
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 20, 2017 09:31   Subject: Re: Collection of Manuel Mesa
Today, some pieces from Bulgaria...

131:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 19, 2017 11:49   Subject: Re: Collection of Manuel Mesa
And more China...

130:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 18, 2017 05:56   Subject: Re: Collection of Manuel Mesa
Again China....

129:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 17, 2017 11:15   Subject: Re: Collection of Manuel Mesa
Thank you, Mike Lee and Heimo Hellwig. I forgot to thank you for your kind words.

Manuel Mesa
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 17, 2017 09:30   Subject: Re: Collection of Manuel Mesa
Today two bulgarian specimens...

128:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 16, 2017 10:38   Subject: Re: Collection of Manuel Mesa
127:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 11, 2017 11:45   Subject: Re: Collection of Manuel Mesa
126:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 10, 2017 14:17   Subject: Re: Collection of Manuel Mesa
125:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Oct 09, 2017 09:52   Subject: Re: Collection of Manuel Mesa
Thank you, Carles for your words. And first of all, this forum must go on!

Today ... another special piece from China.

124:
  Topic: No room for politic
Manuel Mesa

Replies: 4
Views: 6711

PostForum: Forum questions   Posted: Oct 03, 2017 05:55   Subject: No room for politic
Today is a sad day for me !!!
Our administrator has closed the Spanish side in protest to the political tensions in Catalonia (Spain) of which all of you are aware.
Jordi has always been proud that ...
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Sep 29, 2017 06:43   Subject: Re: Collection of Manuel Mesa
Nice specimens and pictures. Congratulations!

Thank your for your enthusiastic words, Carles. Today I upload two special pieces in your honor.

122:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Sep 28, 2017 06:57   Subject: Re: Collection of Manuel Mesa
Today a pair of chinese fluorites from a locations where we don't usually see many pieces ...

121:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Sep 27, 2017 05:06   Subject: Re: Collection of Manuel Mesa
Outstanding Goboboseb quartz!

Thank you, Tobi, for your kind remarks.

120:
  Topic: Collection of Manuel Mesa
Manuel Mesa

Replies: 208
Views: 131846

PostForum: Collection photos and Collector's page   Posted: Sep 26, 2017 06:33   Subject: Re: Collection of Manuel Mesa
119:
 
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