Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Oct 29, 2014 10:05:37 GMT -5
I found this rock I know not where It is unique and soft so thought I'd share It will scratch with dolomite Try rhyming with that, yea right Wait, wait, don't go away, I will stop. I had a "duh" moment yesterday because it suddenly appeared to me that this stone is real soft. I had cut a bunch of slabs from it a few days ago then yesterday I was getting it ready for the slab grabber and the diamond burr just sank into it with very little pressure. I was surprised and could not believe it so I tried it again in a different place with the same results. I tried scratching it with a penny and nothing happened. There was a piece of Kona dolomite laying here that jugglerguy had sent to me and it would just barely scratch this rock. That puts the hardness between 3 and 4. I looked up dolomite and this rock has a lot of similarities (several colors, translucence and hardness). There is a black line that looks like a fracture so I took my hammer and very large chisel and tried to split it. The rock refused to split but after a bunch of whacks it finally broke the corner off. Surprised again because the break was rough but very shiny like a quartz break. I am illiterate on dolomite and serpentine so I come to you my friends to see if anyone has a clue (yea, I tried the clues closet and it did not help). One other thing is the face on a couple of the slabs has some kind of flash which can be seen in the photos. I am at the end of my knowledge so here are the photos. The break. The face wet. The face dry. The face glitter. Back lit. Thanks in advance for any help or comments. Jim
|
|
spiritstone
Cave Dweller
Member since August 2014
Posts: 2,061
|
Post by spiritstone on Oct 29, 2014 13:40:49 GMT -5
Dont know for certain, going to toss in a guess. Dino Dung?
|
|
gemfeller
Cave Dweller
Member since June 2011
Posts: 3,759
|
Post by gemfeller on Oct 29, 2014 15:20:02 GMT -5
If it scratches easy with dolomite, Better not try dynamite. I’ve thought and thunk with all my might But just can’t get the ID right. It looks to me like just plain quartzite But the softness shows that can’t be right. Maybe someone who’s really bright Can help you with your ID plight. As for me I’ll leave this site: I’m off to cut some sagenite.
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Oct 29, 2014 21:02:39 GMT -5
does it bubble with acid?
Looks like marble/onyx/travertine/calcite/aragonite type stuff to me.
|
|
|
Post by fantastic5 on Oct 29, 2014 21:52:10 GMT -5
I second the acid test. I'm leaning towards calcite.
|
|
|
Post by snowmom on Oct 30, 2014 6:27:00 GMT -5
calcite! my vote too. pretty with the light shining through it like that....
|
|