Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 7, 2012 16:44:32 GMT -5
I got this cube from the "traveling rock box". Justin (juzwuz) got it from a local supplier, but he also did not know what it was. I did a couple of tests. Simple ones of course. #1) HCl to test for carbonates or other reactivity result = negative, non-reactive with hydrochloric acid #2) scratch with hardened stainless steel knife blade. Rockwell C of 60 results = negative, stone does not scratch with hardened steel. #3) Specific Gravity result SG = 2.87 If anybody has other tests I'll be happy to run them. Otherwise, I am gonna say we have a very nice form of Jasper or Chrysoprase. Here is a couple of photos, taken DRY!
|
|
|
Post by FrogAndBearCreations on Aug 7, 2012 16:47:59 GMT -5
could it be a form of charoite? is it fiberous?
|
|
|
Post by jakesrocks on Aug 7, 2012 17:06:43 GMT -5
Could always do a streak test, but with the apparent mix of minerals that may not be reliable.
|
|
Don
Cave Dweller
He wants you too, Malachi.
Member since December 2009
Posts: 2,616
|
Post by Don on Aug 7, 2012 17:16:34 GMT -5
could it be some kind of Jade? Jade's SG is 2.9 - 3.1, hardness 6.
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 7, 2012 18:04:16 GMT -5
Don; I have considered jade-like stuff. I have some tremolite that is similar. I wont know until I start cutting the preform. Jadelike materials just feel different against the blade than do silicas. Blue G in particular, while a 6 mohs is the toughest and hardest to cut material I have ever encountered. Not that I have encountered many. I have probably cut 50 different stones of perhaps 10 species. Justin, can we buy more of this stuff? ?
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
|
Post by Sabre52 on Aug 7, 2012 22:45:51 GMT -5
Yeah, I've seen Washington jade with very similar coloring . If I had to guess I'd say jade or something in that group of minerals and a lot of jade contains chromium which can create some of those bright green zones, tremolite which can add the cream colors or even included quartz....Mel
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 10, 2012 14:54:10 GMT -5
When I first saw it I thought thulite but then seeing it wet I was thrown off by all the different stuff. I have been learning from Mel and some others that the jade and nephrite family can include a huge variety. Good luck on pinpointing what you have. A very non professional two cents would be that with the sg just a little low for nephrite could mean that there is quartz which would bring that number down just a little since it is 2.65. The sg is too heavy for jasper/agate. Jim
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 10, 2012 17:53:22 GMT -5
When I first saw it I thought thulite but then seeing it wet I was thrown off by all the different stuff. I have been learning from Mel and some others that the jade and nephrite family can include a huge variety. Good luck on pinpointing what you have. A very non professional two cents would be that with the sg just a little low for nephrite could mean that there is quartz which would bring that number down just a little since it is 2.65. The sg is too heavy for jasper/agate. Jim Thanks Jim. You haven't seen it we yet! Maybe I should take a wet picture! No doubt if this is nephrite there are other stuff mixed in. Yes, the SG too high for jasp/ag but if they are included it would give the reason for being too low for pure jade. I gave Justin an order for more. I don't want justin to think he is obligated or anything. His guy may not wanna play ball.
|
|
|
Post by tntmom on Aug 13, 2012 15:06:53 GMT -5
Scott,
I just sent you a pm. A Washington friend ID'ed this as Listwanite. He's not a member of the forum and asked me if I would pass the info along.
|
|
|
Post by jakesrocks on Aug 13, 2012 15:13:10 GMT -5
Good catch Krystee. Wonder if we have the same friend ? I have a hunk of Listwanite out in the garage that he gave me a few years back. Gonna get it and compare to Scott's pic. Here's a not too good pic of what I have. It's very heavy for its size. My friend thought at first that he had Jade. He sent a piece to a lab to be analyzed. Came back as Listwanite. Krystee, would your friends first name happen to be Aaron ?
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 13, 2012 17:46:07 GMT -5
Awesome! Krystee/Don I would love to speak with this generous source of information. My main question is this. This website www.turnstone.ca/qam.htm says that listwanite is a carbonated etc....... This material is unreactive to Hydrochloric Acid. Is Listwanite still a possibility? In Krystee's PM this gentleman also said locals call it Niccolite (my research says no) or Garnierite. Garnierite is nickel silicate. skywalker.cochise.edu/wellerr/mineral/garnierite/garnieriteL.htmLooks pretty too!
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 13, 2012 18:36:08 GMT -5
We have a winner! lol
|
|
|
Post by jakesrocks on Aug 13, 2012 18:42:21 GMT -5
|
|
|
Post by Donnie's Rocky Treasures on Aug 13, 2012 19:39:55 GMT -5
That's pretty!
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Aug 16, 2012 12:58:54 GMT -5
Hey!!! I want some of that massive grossular garnet! That's make a cool sphere.
Looks like I need to make a road trip to washington state for lots of cool stuff.
|
|
|
Post by tandl on Aug 23, 2012 18:53:28 GMT -5
That is cool stuff. another metamorphic beauty
|
|