We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences


Spanish message board






Newest topics and users posts
27 Feb-11:42:17 Re: sometimes fluorescent (Steveb)
27 Feb-10:30:36 Re: sometimes fluorescent (James Catmur)
27 Feb-08:34:24 Re: sometimes fluorescent (Bergur_e_sigurdarson)
27 Feb-08:28:13 Sometimes fluorescent (Tom Mazanec)
26 Feb-23:38:54 Mineral talks live - episode 33 - dr. Federico pezzott; curator; nat hist museum of milan (Bluecapproductions)
26 Feb-23:37:34 Mineral talks live - episode 32 - jeff scovil - mineral photographer; phoenix, arizona, us (Bluecapproductions)
26 Feb-16:47:39 Re: collection of sante celiberti (Sante Celiberti)
26 Feb-14:07:46 Re: collection of michael shaw (Michael Shaw)
26 Feb-14:07:45 The mizunaka collection - beryl (Am Mizunaka)
26 Feb-10:01:34 Re: collection of jean suffert (Jean Suffert)
26 Feb-08:54:26 Re: the mineral collecting history of the 79 mine, gila county, arizona, usa - (33) (Tony L. Potucek)
25 Feb-23:48:45 Re: collection of volkmar stingl (Volkmar Stingl)
25 Feb-18:00:24 Popular minerals - octahedral fluorite from shangbao mine, china (Jordi Fabre)
25 Feb-13:40:55 Mineral talks live - episode 31 - dr. Gene meieran - private collector, oregon, usa (Bluecapproductions)
25 Feb-13:39:13 Mineral talks live - episode 30 - bryan swoboda; founder, bluecap productions hawai'i, usa (Bluecapproductions)
25 Feb-13:35:46 Mineral talks live - apologies!!! i've been lack! (Bluecapproductions)
25 Feb-13:28:25 Re: mineral talks live (Bluecapproductions)
25 Feb-05:10:15 Re: the mineral collecting history of the 79 mine, gila county, arizona, usa - (33) (Jonesey)
24 Feb-20:22:43 The mizunaka collection - smoky quartz (Am Mizunaka)
24 Feb-16:38:41 Re: collection of firmo espinar (Firmo Espinar)
24 Feb-15:07:07 Re: collection of sante celiberti (Sante Celiberti)
24 Feb-11:36:48 Re: collection of sante celiberti (James Catmur)
24 Feb-06:27:14 Re: i want to know this stone (Alshawani)
24 Feb-06:22:02 Re: collection of sante celiberti (Sante Celiberti)
24 Feb-06:18:23 Re: i want to know this stone (Alshawani)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
79049


The time now is Feb 27, 2021 14:33

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Is this beryl?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
4


View previous topic :: View next topic  
Author Message

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 07, 2021 18:31    Post subject: Is this beryl?  

This came from a site that has had other beryl specimens collected--beryl is in top left corner of specimen


beryl 1 (2).JPG
 Mineral: Beryl
 Locality:
Maryland, USA
 Dimensions: 5 x 4.5cm
 Description:
from pegmatites in stream in southern Howard County, Maryland
 Viewed:  944 Time(s)

beryl 1 (2).JPG


Back to top
Reply to topic Reply with quote
Like
2
   

Volkmar Stingl




Joined: 23 Sep 2012
Posts: 316
Location: Innsbruck


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 08, 2021 00:23    Post subject: Re: Is this beryl?  

Hard to say from this picture. Try another one with the "beryl" in front.

Did you do a hardness test? Streak test?

At the moment, it looks more like quartz to me.

Volkmar
Back to top
Reply to topic Reply with quote
Like
1
   

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 08, 2021 09:24    Post subject: Re: Is this beryl?  

Volkmar Stingl wrote:
Hard to say from this picture. Try another one with the "beryl" in front.

Did you do a hardness test? Streak test?

At the moment, it looks more like quartz to me.

Volkmar



grn beryl 2 - Crop.jpg
 Mineral: beryl
 Locality:
Maryland, USA
 Description:
here is a close up of the material in first photo
 Viewed:  810 Time(s)

grn beryl 2 - Crop.jpg


Back to top
Reply to topic Reply with quote
Like
   

James Catmur
Site Admin



Joined: 14 Sep 2006
Posts: 809
Location: Cambridge


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 08, 2021 09:44    Post subject: Re: Is this beryl?  

What is the hardness, please?

Test 8 on this page

https://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487
Back to top
Reply to topic Reply with quote
Like
   

Pete Richards
Site Admin



Joined: 29 Dec 2008
Posts: 730
Location: Northeast Ohio


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 08, 2021 11:16    Post subject: Re: Is this beryl?  

This still looks like quartz to me. Quartz and ordinary beryl (not highly colored) are very difficult to tell apart in the field - and also by eye.

A hardness test will help, but the hardness of quartz and beryl are not that different, so it may be hard to get a definitive result. Try to scratch this with known beryl and known quartz, and try to scratch each of them with this.

_________________
Collecting and studying crystals with interesting habits, twinning, and epitaxy
Back to top
Reply to topic Reply with quote
Like
   

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 10, 2021 21:29    Post subject: Re: Is this beryl?  

Green mineral on specimen:

Streak is colorless
Not scratched by quartz
Scratches quartz
Back to top
Reply to topic Reply with quote
Like
   

James Catmur
Site Admin



Joined: 14 Sep 2006
Posts: 809
Location: Cambridge


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 11, 2021 06:23    Post subject: Re: Is this beryl?  

How about with corundum or diamond? It is harder than quartz (7), that helps, and makes beryl a bit more likely
Back to top
Reply to topic Reply with quote
Like
   

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 11, 2021 10:26    Post subject: Re: Is this beryl?  

James Catmur wrote:
How about with corundum or diamond? It is harder than quartz (7), that helps, and makes beryl a bit more likely


Green material on specimen is scratched by corundum
Back to top
Reply to topic Reply with quote
Like
   

Pete Richards
Site Admin



Joined: 29 Dec 2008
Posts: 730
Location: Northeast Ohio


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 11, 2021 10:40    Post subject: Re: Is this beryl?  

Now if you go to Webmineral.com you can do a search and find all minerals with a hardness of 8. (There are 28). Probably you will be able to rule out most of them based on scarcity, locality, etc.
_________________
Collecting and studying crystals with interesting habits, twinning, and epitaxy
Back to top
Reply to topic Reply with quote
Like
1
   

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 11, 2021 17:18    Post subject: Re: Is this beryl?  

Pete Richards wrote:
Now if you go to Webmineral.com you can do a search and find all minerals with a hardness of 8. (There are 28). Probably you will be able to rule out most of them based on scarcity, locality, etc.


They show beryl as hardness of 7.5 rather than 8. Base on color and occurrence I think it's beryl. Topaz has one record in MD and chrysoberyl has not been found in MD.

http://www.webmineral.com/cgi-bin/search/search.pl?Realm=All&Match=0&Terms=hardness-7.5&maxhits=10&Rank=31
Back to top
Reply to topic Reply with quote
Like
   

Pete Richards
Site Admin



Joined: 29 Dec 2008
Posts: 730
Location: Northeast Ohio


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 11, 2021 17:57    Post subject: Re: Is this beryl?  

I think you've done a great job of sleuthing this out! Enjoy your beryl!
_________________
Collecting and studying crystals with interesting habits, twinning, and epitaxy
Back to top
Reply to topic Reply with quote
Like
   

Jim Wilkinson




Joined: 16 Jan 2021
Posts: 17
Location: Maryland

View user's profile

Send private message

PostPosted: Feb 11, 2021 18:32    Post subject: Re: Is this beryl?  

Thank you!
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> FOR BEGINNERS: What is it? Where is it from?   All times are GMT - 5 Hours
Page 1 of 1
    

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2021


Powered by FMF