Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Gemstones, Minerals & Fossils
Gemstones and Minerals
Back Outback..
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Syndyne" data-source="post: 613935" data-attributes="member: 378"><p>Good luck over there! The traces look promising. Nice to see a bit of red colour kicking about. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /> </p><p></p><p>It's always interesting to see the similarities between opal fields. </p><p></p><p>We generally don't see opal too often in those upper dry strata level layers as it's more concentrated in the opal clay levels under the overlying sandstones, but it certainly does happen here and there.</p><p></p><p>The purple and mustard coloured staining (bottom pic) is very common here also. It's due to chemical leaching from hydrothermal venting taking place in the former shallow sedimentary deposits. We see that commonly here at the Ridge where there's only a single level lens present. It will also permeate softer clays underneath a good level and can be quite wet and puggy at times, unlike the upper layers nearer the surface where it will be quite hard and dry. We call it a "dry mustard level".</p><p></p><p>Looking forward to seeing more pics.</p><p>Keep up the great work and stay safe 20x!</p><p></p><p>Cheers, </p><p>Shauno.</p></blockquote><p></p>
[QUOTE="Syndyne, post: 613935, member: 378"] Good luck over there! The traces look promising. Nice to see a bit of red colour kicking about. :cool: It's always interesting to see the similarities between opal fields. We generally don't see opal too often in those upper dry strata level layers as it's more concentrated in the opal clay levels under the overlying sandstones, but it certainly does happen here and there. The purple and mustard coloured staining (bottom pic) is very common here also. It's due to chemical leaching from hydrothermal venting taking place in the former shallow sedimentary deposits. We see that commonly here at the Ridge where there's only a single level lens present. It will also permeate softer clays underneath a good level and can be quite wet and puggy at times, unlike the upper layers nearer the surface where it will be quite hard and dry. We call it a "dry mustard level". Looking forward to seeing more pics. Keep up the great work and stay safe 20x! Cheers, Shauno. [/QUOTE]
Verification
Post reply
Gemstones, Minerals & Fossils
Gemstones and Minerals
Back Outback..
Top