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Identity HelpPlease ID - Havent the fainest idea! Am baffled!!!
22nd Apr 2012 19:19 UTCClaire Brimson
Found this again in Oulujoki riverbed under the ice, was digging ice! Finland. It absolutly stinks of Arsenic! The black stuff on top cannot be marked with a penknife only a pegmatite leaves a scratch and there is a streak of grey/black to it. The rest of the rock leaves a streak of black also and is much softer - easy to scratch with penknife! I have not as yet tried to hit it to see if garlic is realesed. It is also heavy. Some of the black stuff had different colours in it as well. I left it in the sun to see if it would go sticky but it was rock solid as it were.
Any ideas???
Many thanks once again.
Claire
24th Apr 2012 11:11 UTCJosé Zendrera 🌟 Manager
Just a guess: Perhaps a silex nodule in calcareous rock?
Greetings.
24th Apr 2012 16:29 UTCClaire Brimson
Many thanks
Claire
24th Apr 2012 21:53 UTCJosé Zendrera 🌟 Manager
Anyway, if it smells like arsenic, you must take care with it!
Greetings.
25th Apr 2012 15:35 UTCClaire Brimson
Kiitos
Claire
25th Apr 2012 17:33 UTCSam Cordero, Jr.
26th Apr 2012 18:45 UTCClaire Brimson
Many thanks also. Which sort of tests should I try please?
Claire
18th May 2012 19:01 UTCPekka Ruoho
do you think it could be Arsenopyrite or Löllingite?
try to clean the surface (brush or knife) somewhere.
see this small piece of löllingite from kaatiala after som cleaning
regards PekkaR
18th May 2012 19:33 UTCClaire Brimson
No, it wasnt that, But.... I do have some of that as well!
Very many thanks for turning up here - tis great to have Finnish guy on here as wel who is local l :-)
Claire
18th May 2012 19:34 UTCAnonymous User
18th May 2012 19:40 UTCJolyon Ralph Founder
18th May 2012 19:52 UTCPaul Brandes 🌟 Manager
18th May 2012 19:58 UTCClaire Brimson
I put it on the railroad here as it just stank and was unsafe in smell (arsenic), so now the railroad smells :-D
Thank you very much for your help with this one and with all my queryries on rocks. I learn from you all.
Kiitos
Claire
21st May 2012 22:19 UTCAnonymous User
22nd May 2012 18:58 UTCClaire Brimson
Many thanks... when I first glanced at it, I thought similar but then a closer inspection showed the black stuff with almost irredence in it and the smell of arsenic was a wee bit overpowering! So that kinda put a halt on my sea theory. I have since found out there is some sort of factory up river..... dont know if that has anything to do with it, but I have since also found other bits similar in the river bed as well...
By the way, I went to the Geological museum to try and find out about your rocks... I spent most of the day there (easiily done - rocks :) ) but could not really find anything that looked similar apart from mica and graphite! I know of graphite mine in Derbyshire/Pennines..... but......????
Will try again when I have time....
Claire
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 13, 2024 09:55:20