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Identity HelpListwanite?
6th Nov 2016 07:00 UTCW4nder
Location was Deer Creek, Snohomish County Washington. (Location known for nephrite)
No reaction to magnet
Streak is white
Can be scratched by glass (mohs 6)
No discernable reaction to hcl acid
Specific gravity 2.923077 (obtained by directions on this site http://www.johnbetts-fineminerals.com/jhbnyc/articles/specific_gravity.htm)
I have since been told it is called Listwanite.
Problem is. . . I can't find much info on Listwanite (did find plenty of places to BUY it, but nothing about its physical properties. )
I tried searching for listvenite, listvanite, or listwaenite.
The ONLY source of info I've found is the Wikipedia page, and it doesn't offer much.
Anybody have a resource they can point me to, or possiby an alternate name?
6th Nov 2016 09:33 UTCErik Vercammen Expert
6th Nov 2016 12:44 UTCAlfred L. Ostrander
I agree this is probably nephrite and is misidentified. Being an uncommon rock name from petrology, I don't consider the name to be a structural variety, color variety or an invented name for marketing purposes. Considering the geology involved I consider it a bad or abused use of a proper rock name.
Best Regards,
Al O
6th Nov 2016 14:12 UTCAlfredo Petrov Manager
6th Nov 2016 16:45 UTCReiner Mielke Expert
6th Nov 2016 17:26 UTCMichael Hatskel
Carbonate indeed shall be magnesian, so pulverizing it should help with the HCl test.
IMHO the rock texture doesn't look schistose/flaky enough for listvenite.
6th Nov 2016 18:26 UTCAlfredo Petrov Manager
6th Nov 2016 19:01 UTCRussell Boggs
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