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

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
21 Aug-10:50:45 Re: mineral identification (Ricknsarah)
21 Aug-10:49:53 Mineral identification (Ricknsarah)
21 Aug-10:39:43 Re: sainte-marie-aux-mines - but not during showtime (Jordi Fabre)
21 Aug-10:27:08 Re: sainte-marie-aux-mines - but not during showtime (Philippe Durand)
21 Aug-09:45:27 Re: tucson show 2017 (Bob Harman)
21 Aug-09:32:17 Re: tucson show 2017 (Jordi Fabre)
21 Aug-09:09:25 Re: tucson show 2017 (Bob Harman)
21 Aug-05:41:28 Sainte-marie-aux-mines - but not during showtime (Andyh)
21 Aug-05:33:03 Re: tucson show 2017 (Daniel Peters)
21 Aug-00:27:05 Re: "deep sea manganese nodule".... (Mathias)
21 Aug-00:21:28 Re: ferberite, pyrite, siderite, and..... ? (Mathias)
20 Aug-15:02:19 Re: franjungle collection (Franjungle)
20 Aug-04:40:01 Re: micro photos of inclusions in quartz (Zbhjzm)
20 Aug-04:17:26 Re: crystal cavity + green vein poss. Chlorite? (Kara)
20 Aug-03:22:15 Re: ferberite, pyrite, siderite, and..... ? (Jorge Santos Garcia)
20 Aug-03:18:56 Re: collection of heimo hellwig (Heimo Hellwig)
20 Aug-03:06:27 Re: crystal cavity + green vein poss. Chlorite? (Peter Lemkin)
19 Aug-23:04:59 Re: question about fluorite on quartz (Robert Seitz)
19 Aug-20:11:06 Re: ferberite, pyrite, siderite, and..... ? (Justin Hickok)
19 Aug-17:07:41 Re: collection of heimo hellwig (Franjungle)
19 Aug-16:31:42 Re: question about fluorite on quartz (Protium)
19 Aug-16:11:36 Re: collection of fiebre verde - coscuez (#708) (Fiebre Verde)
19 Aug-14:07:39 Re: crystal cavity + green vein poss. Chlorite? (Kara)
19 Aug-13:27:25 Re: crystal cavity + green vein poss. Chlorite? (Peter Megaw)
19 Aug-13:03:34 Re: crystal cavity + green vein poss. Chlorite? (Peter Lemkin)

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
44991


The time now is Aug 21, 2018 10:57

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Help Identifying Unusual Fireplace Rocks
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
1


View previous topic :: View next topic  
Author Message

opositica




Joined: 16 Jan 2018
Posts: 5
Location: Toronto

View user's profile

Send private message

PostPosted: Jan 17, 2018 01:43    Post subject: Help Identifying Unusual Fireplace Rocks  

Hi, I'm new here, and very curious about the unusual rocks that make up my fireplace. I've looked at guides, but don't seem to be very good at it. Here is the first one. I have more! Thanks in advance. Char


P1270031.JPG
 Description:
 Viewed:  2315 Time(s)

P1270031.JPG


Back to top
Reply to topic Reply with quote
Like
   

jim hill




Joined: 03 Sep 2017
Posts: 37
Location: Bessemer, PA

View user's profile

Send private message

PostPosted: Jan 17, 2018 02:21    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

URINATED ON BY MOUSE ?
Back to top
Reply to topic Reply with quote
Like
   

opositica




Joined: 16 Jan 2018
Posts: 5
Location: Toronto

View user's profile

Send private message

PostPosted: Jan 17, 2018 02:28    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

jim hill wrote:
URINATED ON BY MOUSE ?


That's just my 'assistant' and she doesn't 'go' outside her cage but can you tell me what the rock is?
Back to top
Reply to topic Reply with quote
Like
   

Gail




Joined: 21 Feb 2008
Posts: 5556
Location: Texas, Lone Star State.


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 17, 2018 08:09    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Cute rat, my children had some. That’s quartz, as best I can tell.
_________________
Minerals you say? Why yes, I'll take a dozen or so...
Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 639
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 17, 2018 10:09    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

And it looks to be amethyst (purple quartz). It is purple, as it appears in the photo, yes?
Back to top
Reply to topic Reply with quote
Like
   

Dale Hallmark




Joined: 16 Jun 2014
Posts: 171
Location: Texas Panhandle


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 17, 2018 10:19    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Looks more Smokey to me :-) (joke)

Dale
Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 639
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 17, 2018 10:47    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Good one!
Back to top
Reply to topic Reply with quote
Like
   

opositica




Joined: 16 Jan 2018
Posts: 5
Location: Toronto

View user's profile

Send private message

PostPosted: Jan 17, 2018 13:17    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Thank you very much, I appreciate it.

All mice aside ... are these pinkish and silvery rocks type of quartz too?



P1270481.JPG
 Description:
 Viewed:  2099 Time(s)

P1270481.JPG


Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 639
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 17, 2018 16:52    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

They are rocks with a lot of mica in them--that's what you are seeing.

In general, a mica-rich rock like these is schist, a type of metamorphic rock.

The pink rock, however, probably contains lepidolite, a particular kind of mica that is pink or lilac colored. Go ahead and look it up online, and you'll see many pictures of it.

To expand on this last comment: there are actually two similar & related kinds of mica that can be that color, lepidolite and "rose muscovite". Lepidolite is actually, usually more of a lilac or violet color, whereas "rose muscovite" is more pink. If you Google each of these, you'll see a lot of pictures that illustrate the color difference.

That's the simple answer to your question about these rocks. Neither rock is going to be pure mica; the remainder of both of these rocks is going to be a mixture of quartz and feldspar--everything that's not the shiny, flaky mica grains.
Back to top
Reply to topic Reply with quote
Like
   

opositica




Joined: 16 Jan 2018
Posts: 5
Location: Toronto

View user's profile

Send private message

PostPosted: Jan 18, 2018 15:40    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Thankyou so much everyone. And for the person who asked before, yes the first rock was purple.

There is one other type that I noticed. It's matte, deeply pitted/cratered , and a color and appearance like petrified wood.



P1270486.JPG
 Description:
 Viewed:  1958 Time(s)

P1270486.JPG


Back to top
Reply to topic Reply with quote
Like
   

opositica




Joined: 16 Jan 2018
Posts: 5
Location: Toronto

View user's profile

Send private message

PostPosted: Jan 24, 2018 11:52    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Can anyone tell me please what the matte-looking rock in the fireplace is (scroll up one post) ?
Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 639
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 24, 2018 16:05    Post subject: Re: Help Identifying Unusual Fireplace Rocks  

Well, Opositica, I think no one has responded because it's pretty hard to impossible to really tell what that one is--to make any guess that's likely to be correct. It "could" be a type of petrified wood, or it could be (what it mostly looks like) some type of fine-grained sedimentary rock, or a metamorphosed fine-grained sedimentary rock; shale, siltstone, argillite, or (their metamorphosed equivalents) siltite, meta-argillite,hornfels, or something similar. Most shaley sedimentary rocks are not hard and durable enough to be used in a wall or fireplace; hence, the likelihood of it being a metamorphic rocks rather than simple sedimentary. But some rocks, you just cannot tell anything definitive from an ordinary photograph; and this is one example of that. It's possible that it could be some type of fine-grained igneous rock, too.
Back to top
Reply to topic Reply with quote
Like
1
   
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 2006-2018


Powered by FMF