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
04 Apr-06:20:06 Re: presentation of new members - parrish isaacs from vermont (Dany Mabillard)
04 Apr-03:00:53 Re: stay at home - coronavirus / covid-19 (Fena Kuiperi)
04 Apr-02:10:22 Re: sainte-marie-aux-mines 2020? (Fiebre Verde)
03 Apr-22:20:46 Re: don lum collection (Don Lum)
03 Apr-22:12:51 Re: stay at home - coronavirus / covid-19 (Don Lum)
03 Apr-21:28:13 Re: presentation of new members - parrish isaacs from vermont (Don Lum)
03 Apr-18:54:46 Re: presentation of new members - parrish isaacs from vermont (Michael Shaw)
03 Apr-17:39:45 Re: collection of firmo espinar (Firmo Espinar)
03 Apr-17:19:25 Re: stay at home - coronavirus / covid-19 (Rweaver)
03 Apr-16:46:42 Presentation of new members - parrish isaacs from vermont (Parr.Ish)
03 Apr-16:40:56 Re: collection of sante celiberti - a mineralogical trip through italy (Sante Celiberti)
03 Apr-16:36:00 Stay at home - coronavirus / covid-19 - this is going to be long. (Jordi Fabre)
03 Apr-16:17:40 The mizunaka collection - fluorite (Am Mizunaka)
03 Apr-15:54:39 Re: sainte-marie-aux-mines 2020? (Jordi Fabre)
03 Apr-15:37:31 Re: narrated slideshows (Bluecapproductions)
03 Apr-15:34:52 Re: bluecapproductions releases full videos for free on youtube (Bluecapproductions)
03 Apr-14:15:26 Sainte-marie-aux-mines 2020? (Fiebre Verde)
03 Apr-13:30:42 Re: stay at home - coronavirus / covid-19 (Michael Shaw)
03 Apr-13:05:18 Re: stay at home - coronavirus / covid-19 (Don Lum)
03 Apr-12:56:21 Re: stay at home - coronavirus / covid-19 (Don Lum)
03 Apr-12:48:23 Re: stay at home - coronavirus / covid-19 (Don Lum)
03 Apr-11:17:42 Re: don lum collection (Don Lum)
03 Apr-10:44:18 Re: stay at home - coronavirus / covid-19 (Dany Mabillard)
03 Apr-09:47:58 Re: collection of michael shaw (Michael Shaw)
02 Apr-22:13:03 Re: stay at home - coronavirus / covid-19 (Don Lum)

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
65316


The time now is Apr 04, 2020 06:30

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
what is this?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like


View previous topic :: View next topic  
Author Message

Catahoula




Joined: 13 Mar 2019
Posts: 26
Location: California, USA

View user's profile

Send private message

PostPosted: Mar 25, 2020 10:48    Post subject: what is this?  

Hello Mineral Forum,

I am a Mojave Desert wanderer and I have collected amazing specimens over the year of walking. This is a recent find. It is from the locale of Mojave, CA. The area hosts chalcedony, jasper, opal and agate. This specific location has quite a lot of what I assumed was brown jasper/opal. All beautiful, but dark and very little translucence. This specific piece is large, roughly 4 lbs. It fractures like obsidian. Anyone care to take a stab at what it is?

Thank you all,
Jess



IMG_1989.jpeg
 Mineral: Chalcedony/ jasper?
 Description:
Mojave, CA
Boulder, 4 lbs
 Viewed:  337 Time(s)

IMG_1989.jpeg



IMG_1989.jpeg
 Mineral: chalcedony/ jasper
 Description:
Mojave, CA
Boulder, 4 lbs
 Viewed:  337 Time(s)

IMG_1989.jpeg


Back to top
Reply to topic Reply with quote
Like
   

Catahoula




Joined: 13 Mar 2019
Posts: 26
Location: California, USA

View user's profile

Send private message

PostPosted: Mar 25, 2020 10:49    Post subject: Re: what is this?  

Catahoula wrote:
Hello Mineral Forum,

I am a Mojave Desert wanderer and I have collected amazing specimens over the year of walking. This is a recent find. It is from the locale of Mojave, CA. The area hosts chalcedony, jasper, opal and agate. This specific location has quite a lot of what I assumed was brown jasper/ opal. All beautiful, but dark and very little translucent. This specific piece is large, roughly 4 lbs. It fractures like obsidian. Anyone care to take a stab at what it is?

Thank you all
Jess



IMG_1986.jpeg
 Description:
 Viewed:  335 Time(s)

IMG_1986.jpeg


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 665
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Mar 25, 2020 11:07    Post subject: Re: what is this?  

If colorful petrified wood is found in that area, then my first choice of ID would be just that.
If no petrified wood comes from that area, then my thought would be a piece of microcrystalline quartz, variety colorful jasper.
Petrified wood is silicified wood (microcrystalline quartz replaced wood), similar to jasper. BOB
Back to top
Reply to topic Reply with quote
Like
   

Catahoula




Joined: 13 Mar 2019
Posts: 26
Location: California, USA

View user's profile

Send private message

PostPosted: Mar 25, 2020 11:35    Post subject: Re: what is this?  

Thanks Bob, I have found some beautiful Royal Imperial Jasper (green to cimarron) that seems to be branches, at a lower elevation. Much of this is actually found in seams of lava rock rather than dispersed. This specimen was found in the foothills of the Paiute mountains. Could very likely have been a forested area in a past life.
Back to top
Reply to topic Reply with quote
Like
   

rernst




Joined: 15 Apr 2019
Posts: 4
Location: Greenbelt MD

View user's profile

Send private message

PostPosted: Mar 25, 2020 16:07    Post subject: Re: what is this?  

I'd say it's agate and not petrified wood, nice piece.
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 2006-2020


Powered by FMF