1
$\begingroup$

enter image description here Found this near the Shannon River close to Carrick on Shannon Irelandenter image description here enter image description here Could this be Mutton Fat Nephrite Jade? Thank youenter image description here

$\endgroup$
  • 1
    $\begingroup$ Most likely it isn't jare, but just quartz. But if you want a better answer, more information is required. Please read this guide and edit in as much information as you can $\endgroup$ – Spencer Oct 12 '18 at 21:08
  • $\begingroup$ Sounds like Gary is suggesting he might perhaps be able to provide you more info if you were able to include the details Spencer pointed you to. $\endgroup$ – JeopardyTempest Oct 20 '18 at 5:03
  • $\begingroup$ Seems like maybe you have a fair interest in rocks. If you really are interested in them, or other topics like these, here's a request to try to likewise give back your own time/expertise, on subjects you know well, or perhaps just helping improve other's questions. There's new discussion here to change policy to no longer allow rock id questions, as most prove poor quality, and many users ask a question, then leave, never to be heard from again (at ESSE or at SE as a whole). So hoping if you've found this resource useful, you'll give back if able, just as Gary and Friddy have done for you! $\endgroup$ – JeopardyTempest Oct 20 '18 at 5:07
3
$\begingroup$

Your rock is composed mostly of quartz based texture of the rock's surface and color. It is not jadeite nor nephrite. Mutton fat jade is typically more pale yellowish in color.

$\endgroup$
  • $\begingroup$ Thanks Gary, just curious now as to what the green mineral could be? $\endgroup$ – Dave Oct 12 '18 at 22:01
  • 1
    $\begingroup$ @Dave could be anything. My guess would be either epidote or chlorite, but there's a chance it's some copper mineral, or nickel, or whatever. Impossible to say without proper analysis. $\endgroup$ – Gimelist Oct 12 '18 at 22:46
0
$\begingroup$

Your rock looks very much like Dallasite which is a rock formed from Chlorite, Quartz, and Epidote. It is very common on Vancouver Island but I also suspect it can be found in other areas with pillow basalts. It is a breccia of the minerals above formed primarily from the outer portions of the pillow basalts. I have seen Dallasite deposits in situ that appear to fit in the small void between various balsalt pillows but I cannot seem to find the photos I took. A quick search on "Dallasite in BC" on Google will show a number of different images looking similar to yours. Your rock appear to be heavy towards the quartz but otherwise looks like Dallasite I have seen. The description in Wikipedia is correct if somewhat brief. Dallasite described in Wikipedia

The name "Dallasite" is likely a local name from the Vancouver Island area, other locals make give this rock a different name.

$\endgroup$
  • $\begingroup$ Thank you very much for your insight Friddy, much appreciated...!!! $\endgroup$ – Dave Oct 17 '18 at 22:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.