FMF - Friends of Minerals Forum, discussion and message board

I wonder if it is Rutile. It is hard to exactly tell if that is a possibility from the photos, but it would fit with the gneiss matrix. There are multiple Swiss localities for Rutiles on gneiss, suc ...

Opps, make Barylite orthorhombic, my bad. Too many beers last night :)

Could it be Barylite? Barylite is monoclinic and is rare, but documented from the Crystal Peak area. Just a wild guess.

Thanks Peter, most appreciated. I looked at the Mindat website for Concepcion and that sure looks like the place. Thanks again!

I purchased the two attached Quartz specimens in the early to mid 1970s while in junior high school. Both were noted as being from Chihuahua state with no other locality information. They were label ...

Prudent decision Peter, I'm sure most will understand and see the logic. Looking forward to 2022.

Follow-up on the blue hemimorphites from Ojuela, Mexico. Here is Daniel Trinchillo’s original email on the subject and analysis:

Hello Everyone,

I am writing this email in an effort to share wha ...

That's spectacular Jordi, thanks for the post.

Great idea Jordi, I'll be looking forward to your posts.

Cheers

Brent

Hi

It is a bit hard to tell from the photo, but could it be something in the garnet group? Perhaps a pale Grossular or Andradite?

Cheers

Brent

Here is another specimen from a lesser known locality in the DRC.

Here are a couple of my favorites, starting with this one from the Jewel Pocket, Milpillas. This was a fairly small pocket which produced some very nice Azurites with inky midnight blue crystals on a ...

Thanks for the primer Jordi, let's try it with the suggested format:

https://thediggings.com/mines
(link normalized by FMF)

Thanks Jesse much appreciate the "how to"

There is a site called "the Diggings" which taps into the USGS and BLM land records systems. I tried to send a link, but the anti-spam filter rejected it for some reason (the site is legit ...

Thanks Tobi!

This is a Fluorite and Smoky Quartz from the Zinggenstock locality

This is a Fluorite and Quartz from the Planggenstock Cleft, 11 cms. with the Fluorite xl. measuring about 6 cms.

Yep, the folks who've paid big bucks for Silvers and the dealers who sold them are not gonna like this. As you point out, isotopic quantity measurement is not something every lab can do. A mass spec ...

Hi Phil

Thanks for the reference, much appreciated. I really was interested in what isotopic evidence had come out of the recent studies and will find a copy of this article. It will certainly br ...

Author	Message
Topic: Question about an old specimen
Brent Lockhart Replies: 8 Views: 4701	Forum: What is it? - Where is it from? Posted: Sep 26, 2021 22:35 Subject: Re: Question about an old specimen
Brent Lockhart Replies: 8 Views: 4701	I wonder if it is Rutile. It is hard to exactly tell if that is a possibility from the photos, but it would fit with the gneiss matrix. There are multiple Swiss localities for Rutiles on gneiss, suc ...
Topic: Unknown mineral from Pikes Peak pegmatite
Brent Lockhart Replies: 23 Views: 12838	Forum: What is it? - Where is it from? Posted: Jun 13, 2021 22:13 Subject: Re: Unknown mineral from Pikes Peak pegmatite
Brent Lockhart Replies: 23 Views: 12838	Opps, make Barylite orthorhombic, my bad. Too many beers last night :)
Topic: Unknown mineral from Pikes Peak pegmatite
Brent Lockhart Replies: 23 Views: 12838	Forum: What is it? - Where is it from? Posted: Jun 13, 2021 22:10 Subject: Re: Unknown mineral from Pikes Peak pegmatite
Brent Lockhart Replies: 23 Views: 12838	Could it be Barylite? Barylite is monoclinic and is rare, but documented from the Crystal Peak area. Just a wild guess.
Topic: Locality for Mexican Quartz specimens
Brent Lockhart Replies: 4 Views: 3480	Forum: What is it? - Where is it from? Posted: Mar 03, 2021 21:09 Subject: Re: Locality for Mexican Quartz specimens
Brent Lockhart Replies: 4 Views: 3480	Thanks Peter, most appreciated. I looked at the Mindat website for Concepcion and that sure looks like the place. Thanks again!
Topic: Locality for Mexican Quartz specimens
Brent Lockhart Replies: 4 Views: 3480	Forum: What is it? - Where is it from? Posted: Mar 03, 2021 20:24 Subject: Locality for Mexican Quartz specimens
Brent Lockhart Replies: 4 Views: 3480	I purchased the two attached Quartz specimens in the early to mid 1970s while in junior high school. Both were noted as being from Chihuahua state with no other locality information. They were label ...
Topic: Tucson Gem and Mineral Show (r) 2021
Brent Lockhart Replies: 8 Views: 10790	Forum: News about Shows Posted: Oct 26, 2020 21:11 Subject: Re: Tucson Gem and Mineral Show (r) 2021
Brent Lockhart Replies: 8 Views: 10790	Prudent decision Peter, I'm sure most will understand and see the logic. Looking forward to 2022.
Topic: Possible Fake: Blue Hemimorphite from Ojuela
Brent Lockhart Replies: 41 Views: 59203	Forum: Incorrect classification and fakes Posted: Sep 21, 2020 13:14 Subject: Re: Possible Fake: Blue Hemimorphite from Ojuela
Brent Lockhart Replies: 41 Views: 59203	Follow-up on the blue hemimorphites from Ojuela, Mexico. Here is Daniel Trinchillo’s original email on the subject and analysis: Hello Everyone, I am writing this email in an effort to share wha ...
Topic: Popular Minerals
Brent Lockhart Replies: 98 Views: 81964	Forum: Mines and Mineral Localities Posted: Jun 24, 2020 20:29 Subject: Re: Popular Minerals
Brent Lockhart Replies: 98 Views: 81964	That's spectacular Jordi, thanks for the post.
Topic: Popular Minerals
Brent Lockhart Replies: 98 Views: 81964	Forum: Mines and Mineral Localities Posted: Jun 12, 2020 17:09 Subject: Re: Popular Minerals
Brent Lockhart Replies: 98 Views: 81964	Great idea Jordi, I'll be looking forward to your posts. Cheers Brent
Topic: Is this Phenakite?
Brent Lockhart Replies: 5 Views: 5644	Forum: FOR BEGINNERS: What is it? Where is it from? Posted: May 20, 2020 22:59 Subject: Re: Is this Phenakite?
Brent Lockhart Replies: 5 Views: 5644	Hi It is a bit hard to tell from the photo, but could it be something in the garnet group? Perhaps a pale Grossular or Andradite? Cheers Brent
Topic: Favourite Azurites?
Brent Lockhart Replies: 44 Views: 42952	Forum: Favourite Minerals Posted: Apr 19, 2020 14:08 Subject: Re: Favourite Azurites?
Brent Lockhart Replies: 44 Views: 42952	Here is another specimen from a lesser known locality in the DRC.
Topic: Favourite Azurites?
Brent Lockhart Replies: 44 Views: 42952	Forum: Favourite Minerals Posted: Apr 19, 2020 14:01 Subject: Re: Favourite Azurites?
Brent Lockhart Replies: 44 Views: 42952	Here are a couple of my favorites, starting with this one from the Jewel Pocket, Milpillas. This was a fairly small pocket which produced some very nice Azurites with inky midnight blue crystals on a ...
Topic: Mine sites.
Brent Lockhart Replies: 10 Views: 16543	Forum: Mines and Mineral Localities Posted: Mar 17, 2020 04:00 Subject: Re: Links within the message forum
Brent Lockhart Replies: 10 Views: 16543	Thanks for the primer Jordi, let's try it with the suggested format: https://thediggings.com/mines (link normalized by FMF)
Topic: Mine sites.
Brent Lockhart Replies: 10 Views: 16543	Forum: Mines and Mineral Localities Posted: Mar 16, 2020 20:58 Subject: Re: Mine sites.
Brent Lockhart Replies: 10 Views: 16543	Thanks Jesse much appreciate the "how to"
Topic: Mine sites.
Brent Lockhart Replies: 10 Views: 16543	Forum: Mines and Mineral Localities Posted: Mar 16, 2020 18:30 Subject: Re: Mine sites.
Brent Lockhart Replies: 10 Views: 16543	There is a site called "the Diggings" which taps into the USGS and BLM land records systems. I tried to send a link, but the anti-spam filter rejected it for some reason (the site is legit ...
Topic: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	Forum: Favourite Minerals Posted: Mar 15, 2020 13:56 Subject: Re: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	Thanks Tobi!
Topic: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	Forum: Favourite Minerals Posted: Mar 12, 2020 22:59 Subject: Re: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	This is a Fluorite and Smoky Quartz from the Zinggenstock locality
Topic: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	Forum: Favourite Minerals Posted: Mar 12, 2020 22:51 Subject: Re: Favourite Fluorites?
Brent Lockhart Replies: 223 Views: 383300	This is a Fluorite and Quartz from the Planggenstock Cleft, 11 cms. with the Fluorite xl. measuring about 6 cms.
Topic: Isotopic composition of German Silvers
Brent Lockhart Replies: 6 Views: 13223	Forum: Minerals and Mineralogy Posted: Mar 03, 2020 23:08 Subject: Re: Isotopic composition of German Silvers
Brent Lockhart Replies: 6 Views: 13223	Yep, the folks who've paid big bucks for Silvers and the dealers who sold them are not gonna like this. As you point out, isotopic quantity measurement is not something every lab can do. A mass spec ...
Topic: Isotopic composition of German Silvers
Brent Lockhart Replies: 6 Views: 13223	Forum: Minerals and Mineralogy Posted: Mar 02, 2020 23:37 Subject: Re: Isotopic composition of German Silvers
Brent Lockhart Replies: 6 Views: 13223	Hi Phil Thanks for the reference, much appreciated. I really was interested in what isotopic evidence had come out of the recent studies and will find a copy of this article. It will certainly br ...