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
Gold Prospecting
Hard Rock Gold Prospecting
Learn me about granite(s)
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="shivan" data-source="post: 172549" data-attributes="member: 194"><p>Are you talking about the difference in granitic rocks or in different granite themselves? </p><p>Granite itself will have 65% feldspar (with potassium feldspar in excess of plagioclase) 25% quartz and 10% mafic (dark colored) minerals in its makeup. I think where granite start to differ from each other is in crystal size, the mafic mineral assemblage, if xenoliths are present or not, magnetic susepatability and accessory minerals.</p><p></p><p>Got to pick kids up from school but will pull some of my notes out when i get back, and see if i can help out a bit.</p></blockquote><p></p>
[QUOTE="shivan, post: 172549, member: 194"] Are you talking about the difference in granitic rocks or in different granite themselves? Granite itself will have 65% feldspar (with potassium feldspar in excess of plagioclase) 25% quartz and 10% mafic (dark colored) minerals in its makeup. I think where granite start to differ from each other is in crystal size, the mafic mineral assemblage, if xenoliths are present or not, magnetic susepatability and accessory minerals. Got to pick kids up from school but will pull some of my notes out when i get back, and see if i can help out a bit. [/QUOTE]
Verification
Post reply
Gold Prospecting
Hard Rock Gold Prospecting
Learn me about granite(s)
Top