collapse


* User Info

 
 
Welcome, Guest. Please login or register.
Did you miss your activation email?

* Who's Online

sunshine

Dot Guests: 176 | Dot Users
Dot Hidden: 1

* Board Stats

  • stats Total Members: 13020
  • stats Total Posts: 131082
  • stats Total Topics: 18333
  • stats Total Categories: 5
  • stats Total Boards: 48
  • stats Most Online: 814

* Advertisers

Mining Claims
Gear Pan
The lil Gold Spinner
BC GOLD
The lil Gold Spinner
The Pocket Sluice

Author Topic: can you identify these 3 rocks and the minerals they are showing  (Read 2601 times)

0 Members and 1 Guest are viewing this topic.

Offline newfoundlandguy

  • Member
  • **
  • Posts: 7
  • Kudos: 0
i have no idea what these are i found them on a secluded beach here in Newfoundland

https://www.facebook.com/photo.php?fbid=10152263711485870&set=a.10152263711435870.1073741834.676510869&type=3&theater

this has a main body of quartz but has a lot of orange color

https://www.facebook.com/photo.php?fbid=10152263711495870&set=a.10152263711435870.1073741834.676510869&type=3&theater

this is extremely heavy for its size thought it may be a fossil of some sort

and last

https://www.facebook.com/photo.php?fbid=10152263711475870&set=a.10152263711435870.1073741834.676510869&type=3&theater

this one has purple to brown veins running through it


im very new to rockhounding and these rocks stood out as strange any help would be great

Offline EMF

  • Hero Member
  • ******
  • Posts: 723
  • Kudos: 33
Re: can you identify these 3 rocks and the minerals they are showing
« Reply #1 on: October 04, 2014, 09:40:15 AM »
When I followed those links I saw:  This content is currently unavailable
The page you requested cannot be displayed right now. It may be temporarily unavailable, the link you clicked on may have expired, or you may not have permission to view this page.

Offline newfoundlandguy

  • Member
  • **
  • Posts: 7
  • Kudos: 0
Re: can you identify these 3 rocks and the minerals they are showing
« Reply #2 on: October 04, 2014, 09:42:12 AM »
ill try again new to posting these things


just had a look pics were friends only sorry got it switched to public now please let me know if there is any trouble viewing them now

Offline EMF

  • Hero Member
  • ******
  • Posts: 723
  • Kudos: 33
Re: can you identify these 3 rocks and the minerals they are showing
« Reply #3 on: October 04, 2014, 11:37:24 AM »
The first one is granite pegmatite. the orange/pink colored mineral is a potassium feldspar called orthoclase. The other two look like they were conglomerates that were fractured and intruded by some kind of igneous mineralzation which featured a lot of quartz. However, the second one could have been a mix of sedimentary rocks like conglomerate and sandstone that was subjected to high pressure and gone through metamorphic changes that caused some recrystallization and increased the density. Another possibility is that the white part of the second rock is barite, which would give it a high weight. You could look up barite and do some testing for it, and see if that looks possible.

Offline newfoundlandguy

  • Member
  • **
  • Posts: 7
  • Kudos: 0
Re: can you identify these 3 rocks and the minerals they are showing
« Reply #4 on: October 04, 2014, 11:57:49 AM »
thanks for the response my first thought was maybe tangerine quartz on the first one but orthoclase does look very close as well

Offline EMF

  • Hero Member
  • ******
  • Posts: 723
  • Kudos: 33
Re: can you identify these 3 rocks and the minerals they are showing
« Reply #5 on: October 04, 2014, 02:27:10 PM »
If you hold the specimen in some light and catch it at just the right angle, you will see cleavage layers in the mineral if it is orthoclase. Quartz will have no cleavage at all. You might have to chip it first to get a fresh fracture surface in order to see any cleavage.