View previous topic :: View next topic |
Author |
Message |
Jim Wilkinson
Joined: 16 Jan 2021
Posts: 30
Location: Maryland
![Access to the FMF Gallery title=](templates/FabreMinerals/images/Foro2FMFGallery.jpg)
![View user's profile View user's profile](templates/FabreMinerals/images/lang_english/icon_profile.gif)
![Send private message Send private message](templates/FabreMinerals/images/lang_english/icon_pm.gif)
|
Posted: Mar 29, 2024 00:03 Post subject: Identification question |
|
|
The dark brown material in the upper part of the photo. In large boulder---area likely does not allow rock collecting
Mineral: | staurolite? |
Locality: | Baltimore, Maryland, USA | ![](templates/FabreMinerals/images/LocalidadesGreen.png) |
|
Dimensions: | 2.0 X 1.0 cm |
Description: |
Am not sure if this is staurolite. Staurolite has been reported in this area - host rock is Loch Raven schist |
|
Viewed: |
1734 Time(s) |
![staurolite 1 (2) cr.jpg](files/thumbs/t_staurolite_1_2_cr_689.jpg)
|
|
|
Back to top |
|
![](templates/FabreMinerals/images/spacer.gif) |
James Catmur
Site Admin
![](images/avatars/1655879443486b3bebe41cf.jpg)
Joined: 14 Sep 2006
Posts: 1362
Location: Cambridge
![Access to the FMF Gallery title=](templates/FabreMinerals/images/Foro2FMFGallery.jpg)
![View user's profile View user's profile](templates/FabreMinerals/images/lang_english/icon_profile.gif)
![Send private message Send private message](templates/FabreMinerals/images/lang_english/icon_pm.gif)
|
Posted: Mar 29, 2024 06:20 Post subject: Re: Identification question |
|
|
Jim
Is there any way you could do a few basic tests? Streak and hardness
James
|
|
Back to top |
|
![](templates/FabreMinerals/images/spacer.gif) |
Bob Carnein
Joined: 22 Aug 2013
Posts: 334
Location: Florissant, CO
![Access to the FMF Gallery title=](templates/FabreMinerals/images/Foro2FMFGallery.jpg)
![View user's profile View user's profile](templates/FabreMinerals/images/lang_english/icon_profile.gif)
![Send private message Send private message](templates/FabreMinerals/images/lang_english/icon_pm.gif)
|
Posted: Mar 29, 2024 09:31 Post subject: Re: Identification question |
|
|
The photo is a bit unclear, but it looks to me like iron-oxide staining on quartz. Staurolite usually occurs as well formed crystals (porphyroblasts) rather than irregular masses.
|
|
Back to top |
|
![](templates/FabreMinerals/images/spacer.gif) |
Bob Morgan
Joined: 18 Jan 2018
Posts: 229
Location: Savannah, Georgia
![Access to the FMF Gallery title=](templates/FabreMinerals/images/Foro2FMFGallery.jpg)
![View user's profile View user's profile](templates/FabreMinerals/images/lang_english/icon_profile.gif)
![Send private message Send private message](templates/FabreMinerals/images/lang_english/icon_pm.gif)
|
Posted: Mar 29, 2024 20:12 Post subject: Re: Identification question |
|
|
There is a great mineral society in Baltimore with several members who have collected extensively locally. I'm sure they will be of help.
It's the Baltimore, Maryland Chesapeake Bay Mineral Society
Meetings: 2nd Friday of the month, except July – August
19:30:00
Westchester Community Center, 2414 Westchester Ave, Ellicott City, MD 21043
Check out their web site for more contact information.
|
|
Back to top |
|
![](templates/FabreMinerals/images/spacer.gif) |
Jim Wilkinson
Joined: 16 Jan 2021
Posts: 30
Location: Maryland
![Access to the FMF Gallery title=](templates/FabreMinerals/images/Foro2FMFGallery.jpg)
![View user's profile View user's profile](templates/FabreMinerals/images/lang_english/icon_profile.gif)
![Send private message Send private message](templates/FabreMinerals/images/lang_english/icon_pm.gif)
|
Posted: Mar 29, 2024 23:25 Post subject: Re: Identification question |
|
|
Thanks!
|
|
Back to top |
|
![](templates/FabreMinerals/images/spacer.gif) |
|