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
18 Apr-10:23:19 Re: collection of michael shaw (Michael Shaw)
18 Apr-09:23:31 Re: collection of joseph d'oliveira (Joseph Doliveira)
18 Apr-01:38:56 The mizunaka collection - quartz (Am Mizunaka)
17 Apr-16:31:32 Re: mystery stone, who knows what it is? (Jordi Fabre)
17 Apr-13:20:51 Mystery stone, who knows what it is? (Flubbelyte)
17 Apr-01:49:17 Re: the mim museum in beirut, lebanon (Mim Museum)
16 Apr-09:46:56 Re: locality? (Bob Kerr)
16 Apr-05:47:22 Re: locality? (Tobi)
16 Apr-03:43:50 Re: locality? (Jordi Fabre)
16 Apr-03:36:35 Re: locality? (Tobi)
15 Apr-02:42:05 The mizunaka collection - fluorite (Am Mizunaka)
14 Apr-20:48:16 Re: monthly mineral chronicles, mineral guides and more... (Crocoite)
14 Apr-07:32:21 Re: locality? (Peter Megaw)
14 Apr-07:30:00 Locality? (Bob Kerr)
13 Apr-17:53:56 Re: collection of firmo espinar (Firmo Espinar)
13 Apr-10:22:57 Re: collection from dany mabillard (Dany Mabillard)
13 Apr-08:47:36 Re: collection of michael shaw (Michael Shaw)
12 Apr-23:33:07 Re: collection of volkmar stingl (Volkmar Stingl)
12 Apr-16:13:00 Re: don lum collection (Don Lum)
12 Apr-15:37:19 The mizunaka collection - beryl (Am Mizunaka)
12 Apr-14:55:06 Re: collection of carles millan (Carles Millan)
12 Apr-14:46:24 Re: collection of carles millan (Dany Mabillard)
12 Apr-14:44:22 Re: don lum collection (Dany Mabillard)
11 Apr-22:02:20 Re: don lum collection (Don Lum)
10 Apr-14:59:55 Re: the mizunaka collection - elbaite (Am Mizunaka)

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
112155


The time now is Apr 18, 2024 12:31

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.
Digging a jasper vein
  
  Index -> Mines and Mineral Localities
Like


View previous topic :: View next topic  
Author Message

Rei




Joined: 09 Apr 2014
Posts: 228
Location: Höfuðborgarsvæði


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 25, 2014 06:22    Post subject: Digging a jasper vein  

So, a few days ago I found my first jasper vein, jasper embedded in the (fractured) bedrock itself. I set out to dig it.

My first day was ups and downs. As we pulled out chunks, we were overwhelmed, massive rocks with bright jasper splotches on the exterior. With great effort we hauled some of these big rocks home (along with smaller ones)... only to find out that on every last one, it was just surface deposits. None were worth keeping. :Þ

I didn't give up and went back, and this time focused on only the brightest, non-splotchy stuff. It payed off - I got some nice chunks jasper, solid all the way through. Unfortunately the largest piece, about 500 grams, broke in two as I was extracting it... not sure if it's my fault or if it was already fractured. Need to work on my finesse!

As I was leaving, I took a new route and stumbled into a rock field with lots of chrysoprase and calcite nodules, maybe 20 meters away. The largest piece was huge and embedded in the ground, and I no longer had my tools with me - I'll get it next time. I have no clue how much of that rock is chrysoprase... hopefully all of it! :) I also have no clue whether it's sitting on/embedded in bedrock or is well above it, so I have no clue whether it's a vein or just a deposit.



IMAG4519.jpg
 Description:
Hematite-rich basalt with surface jasper and small amygdules
Hvalfjörður, Iceland
 Viewed:  13336 Time(s)

IMAG4519.jpg



IMAG4522.jpg
 Description:
Hematite-rich basalt with surface jasper and small amygdules
Hvalfjörður, Iceland
 Viewed:  13376 Time(s)

IMAG4522.jpg



IMAG4550.jpg
 Description:
Jasper vein
Hvalfjörður, Iceland
 Viewed:  13297 Time(s)

IMAG4550.jpg



IMAG4549.jpg
 Description:
Jasper vein
Hvalfjörður, Iceland
 Viewed:  13285 Time(s)

IMAG4549.jpg



IMAG4548.jpg
 Description:
Jasper vein
Hvalfjörður, Iceland
 Viewed:  13370 Time(s)

IMAG4548.jpg



IMAG4551.jpg
 Description:
Chrysoprase
Hvalfjörður, Iceland
 Viewed:  13286 Time(s)

IMAG4551.jpg



IMAG4558.jpg
 Description:
Rockhound
Hvalfjörður, Iceland
Okay, so he wasn't actually all that much help, just followed me around, continuously walked underfoot, and complained endlessly. ;)
 Viewed:  13321 Time(s)

IMAG4558.jpg


Back to top
Reply to topic Reply with quote
Like
   

Mark Ost




Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 25, 2014 06:33    Post subject: Re: Digging a jasper vein  

Is that a rock hound??
Back to top
Reply to topic Reply with quote
Like
   

Mark Ost




Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 25, 2014 06:35    Post subject: Re: Digging a jasper vein  

oh now I read the title; of course! Beautiful and wild country you live in. A geologist would think they had died and gone to Valhalla. Fire and brimstone are not so bad!
Back to top
Reply to topic Reply with quote
Like
   

Mike Wood




Joined: 16 Dec 2010
Posts: 456
Location: Northern England


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 25, 2014 11:42    Post subject: Re: Digging a jasper vein  

Thanks for showing these photo's Rei, the green chrysoprase boulders look interesting. The blueish translucent material next to the green material looks more like good chalcedony. These boulders would certainly be worthy of further attention!
Cute doggie, BTW.

_________________
Rock basher
Back to top
Reply to topic Reply with quote
Like
   

Pierre Joubert




Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 26, 2014 03:43    Post subject: Re: Digging a jasper vein  

Mike Wood wrote:
Thanks for showing these photo's Rei, the green chrysoprase boulders look interesting. The blueish translucent material next to the green material looks more like good chalcedony. These boulders would certainly be worthy of further attention!
Cute doggie, BTW.


I have to agree with Mike; the 'chalcedony' really looks promising. If I were you Rei, I would target this mineral above the others.

_________________
Pierre Joubert


'The tree of silence bears the fruit of peace. '
Back to top
Reply to topic Reply with quote
Like
   

Rei




Joined: 09 Apr 2014
Posts: 228
Location: Höfuðborgarsvæði


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 26, 2014 04:07    Post subject: Re: Digging a jasper vein  

Pierre Joubert wrote:
Mike Wood wrote:
Thanks for showing these photo's Rei, the green chrysoprase boulders look interesting. The blueish translucent material next to the green material looks more like good chalcedony. These boulders would certainly be worthy of further attention!
Cute doggie, BTW.


I have to agree with Mike; the 'chalcedony' really looks promising. If I were you Rei, I would target this mineral above the others.


I only just saw that piece the last time I was out on the land, but trust me, I plan to bring out tools to get it the next time I'm out there and to dig a bit in its area to see what else is nearby. :) Hopefully this evening after work - the weather's looking beautiful right now.
Back to top
Reply to topic Reply with quote
Like
   

Rei




Joined: 09 Apr 2014
Posts: 228
Location: Höfuðborgarsvæði


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 26, 2014 20:36    Post subject: Re: Digging a jasper vein  

So, I went out again today and got myself nice and dirty hunting rocks on my land. I first sought out that chalcedony previously pictured. On the way I kept finding calcite crystals littering the hillside and green/yellow/white chalcedony veins embedded into the bedrock. I really have no clue how to get at stuff that's literally *embedded* without destroying it. :Þ

I got to the previously pictured one, and miraculously I extracted it all, in one piece! I won't know until after cleaning how much of it is chalcedony, but I think a lot of it. The stone as a whole is several kilograms.

Searching more in the area, I found yet another type of chalcedony, which I'd call a rainbow jasper. I was finding little bits and pieces in an area, especially under a dwarf birch on the eroding hillside. I'm trying to *restore* the hillside, so I really didn't want to harm it, but it became increasingly obvious, it was grown all throughout this beautiful stone patch. Eventually I gave up and uprooted it (through tried to replant it elsewhere nearby afterwards).

While in the beginning, extraction was going fairly well, without *too* much breakacage (beyond the natural fracturing), as time went on, I found I was breaking it more and more with my attempts to extract it (it just seems to keep going and going!). Ultimately I decided to stop, take a step back, and try to think up a better way to get it out (again, back to the prior mentioned problem, how to remove stones without ruining them?). I figure if I wait long enough, rain will help clean it and make it easier to see what I'm doing, too. Hopefully.

I think I'll take some time off from collecting and work more on cleaning and processing my (accumulating!) inventory at home. :) I've got an oxalic test going on, not sure how it's going. I'll probably start a hydrochloric test tomorrow. Unfortunately, I can't find iron out here, and it'd probably take months to try to re-route it to Iceland because so few companies ship directly, so it'll be a while before I can clean anything that looks like it may have calcite in it. :(



01.jpg
 Description:
Chalcedony vein
Hvalfjörður, Iceland
 Viewed:  13084 Time(s)

01.jpg



02.jpg
 Description:
Chalcedony vein
Hvalfjörður, Iceland
 Viewed:  13159 Time(s)

02.jpg



03.jpg
 Description:
Chalcedony vein
Hvalfjörður, Iceland
 Viewed:  13131 Time(s)

03.jpg



04.jpg
 Description:
Rainbow jasper
Hvalfjörður, Iceland
 Viewed:  13120 Time(s)

04.jpg



05.jpg
 Description:
Rainbow jasper
Hvalfjörður, Iceland
 Viewed:  13128 Time(s)

05.jpg


Back to top
Reply to topic Reply with quote
Like
   

Pierre Joubert




Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 27, 2014 05:07    Post subject: Re: Digging a jasper vein  

I like this last piece(rainbow jasper). Remember, Oxalic acid WILL dull calcite and the only way (that I know) to remove the dullness, is to dip the calcite specimen in hydrochloric acid for a few seconds.
_________________
Pierre Joubert


'The tree of silence bears the fruit of peace. '
Back to top
Reply to topic Reply with quote
Like
   

Rei




Joined: 09 Apr 2014
Posts: 228
Location: Höfuðborgarsvæði


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 07, 2014 16:59    Post subject: Re: Digging a jasper vein  

Pierre Joubert wrote:
Mike Wood wrote:
Thanks for showing these photo's Rei, the green chrysoprase boulders look interesting. The blueish translucent material next to the green material looks more like good chalcedony. These boulders would certainly be worthy of further attention!
Cute doggie, BTW.


I have to agree with Mike; the 'chalcedony' really looks promising. If I were you Rei, I would target this mineral above the others.


So, I worked a bit on this piece today. I didn't want to acid-bathe it full of attached basalt gunk for fear of ruining my acid bath with so much to dissolve, so I tried to chip off pieces first. I'm not sure that was a good idea. I ended up with three large pieces of chalceony - I don't know if they were naturally fractured like that before I started working or not, but they are what they are now. I've got one in a HCl/oxalic bath to see how well it cleans up; I'll try the others afterwards if it looks good.

Also attached are some other pics of finds from nearby that piece.



s1390042.jpg
 Description:
Chalcedony
Hvalfjörður, Iceland
 Viewed:  12926 Time(s)

s1390042.jpg



s1390043.jpg
 Description:
Chalcedony
 Viewed:  12887 Time(s)

s1390043.jpg



s1390044.jpg
 Description:
Chalcedony
Hvalfjörður, Iceland
 Viewed:  12902 Time(s)

s1390044.jpg



s1390055.jpg
 Description:
Chalcedony
Hvalfjörður, Iceland
 Viewed:  12932 Time(s)

s1390055.jpg



s1390056.jpg
 Description:
Chalcedony
Hvalfjörður, Iceland
 Viewed:  12920 Time(s)

s1390056.jpg



s1390057.jpg
 Description:
Chalcedony
Hvalfjörður, Iceland
 Viewed:  12902 Time(s)

s1390057.jpg


Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> Mines and Mineral Localities   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 2006-2024


Powered by FMF