Got A Rock you Want Identified? Post it here! gimme a good picture or 3 or 4!

[Guru3484]

Pls identify what rock is this !

https://ibb.co/jueXR5
https://ibb.co/n5AHtk
https://ibb.co/bBA0Dk
https://ibb.co/hO5p65
https://ibb.co/btZStk
https://ibb.co/mCdntk

 

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[Eu_citzen]

This is a rock from Michigan, please help us figure out what it is. Thank you!!

View attachment 1494425
View attachment 1494432
View attachment 1494433
View attachment 1494434

Phyllite or fine grained mica schist with garnets and/or staurolite.

 

[Eu_citzen]

Pls identify what rock is this !

https://ibb.co/jueXR5
https://ibb.co/n5AHtk
https://ibb.co/bBA0Dk
https://ibb.co/hO5p65
https://ibb.co/btZStk
https://ibb.co/mCdntk

#1 Gneiss
#2 Granitoid
#3 Need close up
#4 Gneiss
#5 Granitoid (Syenite?) with pegmatite (Peggie is more coarse grained)
#6 Same as 2.

 

[Guru3484]

Can this rock be useful like granite or not ! Does genesis have any use bro

#1 Gneiss
#2 Granitoid
#3 Need close up
#4 Gneiss
#5 Granitoid (Syenite?) with pegmatite (Peggie is more coarse grained)
#6 Same as 2.

What are the uses of gneiss & granitoid bro !

 

[Eu_citzen]

What are the uses of gneiss & granitoid bro !

same uses as granite.

 

[Guru3484]

Thanks bro

same uses as granite.

I found this rock in my farm at the top layer . Will this rock go deeper inside ? Will this rock be worth like granite to make a quarry ! Pls help me bro

 

[Eu_citzen]

I found this rock in my farm at the top layer . Will this rock go deeper inside ? Will this rock be worth like granite to make a quarry ! Pls help me bro

I can't tell you that, "bro". The economics you can research on your own, now that you know what it is.
To tell if the rock continues with depth typically involves diamond drilling.

 

[Guru3484]

Okie bro .. thank u

I can't tell you that, "bro". The economics you can research on your own, now that you know what it is.
To tell if the rock continues with depth typically involves diamond drilling.

Just to know , correct me if I'm wrong . Granite & granite genesis worth the same .

 

[tank_rock]

Hello! I'm actually a semi-visitor to this site, I recently bought a couple of rocks at a pet store with the intention of putting them in my fish tank, but first I wanted to confirm what they are! They were sold to me as "rainbow slate" which they do not seem to be...so if anybody could identify these rocks, I would be so grateful!

 

[Eu_citzen]

Hello! I'm actually a semi-visitor to this site, I recently bought a couple of rocks at a pet store with the intention of putting them in my fish tank, but first I wanted to confirm what they are! They were sold to me as "rainbow slate" which they do not seem to be...so if anybody could identify these rocks, I would be so grateful!

View attachment 1495787View attachment 1495788View attachment 1495789View attachment 1495790View attachment 1495791

Looks like glass slag to me.

 

[Eu_citzen]

I would guess this to be a silver sulfide mineral- Thick bluish black mineral covering quartz from a vein outcrop at a known past producer of gold and silver mine. Anyone know what this black/bluish black mineral in a gold/silver vein would be?



View attachment 1494585
View attachment 1494908

Why are you assuming it to be silver-sulphide, besides the known occurrence in the general area?
One sulphide rarely travels alone. When you say blue-black I think covellite. But it doesn't quite look right.

Do the usual tests.

 

[Guru3484]

Pls identify what type of rock is this !

https://ibb.co/fZ2QG5
https://ibb.co/cdwkG5
https://ibb.co/dTVUb5
https://ibb.co/gxVHUQ

Thanks

 

[JM2855]

I was assuming silver based on assay of the vein material in that picture with well over 200 ounces per ton Ag. (18 ppm Au). Will run a 41 element suite assay on it and see what I get. Thank you for the reply. We all appreciate you sharing your knowledge on this forum.

Why are you assuming it to be silver-sulphide, besides the known occurrence in the general area?
One sulphide rarely travels alone. When you say blue-black I think covellite. But it doesn't quite look right.

Do the usual tests.

 

[Bbmbr]

I believe this was found in Mariposa County California. I think its Serpentine, not sure though. Its soapy feeling and has little dark stones in it.

 

[Bbmbr]

This was also found in Mariposa County california . I posted on the "what is it" forum and some believe it may be petrified bone.

 

[Eu_citzen]

Pls identify what type of rock is this !

https://ibb.co/fZ2QG5
https://ibb.co/cdwkG5
https://ibb.co/dTVUb5
https://ibb.co/gxVHUQ

Thanks

Last picture looks like pegmatite.

The first stone looks like some kinda oxide or sulphide.
Will a knife scratch it? If rubbed against a unglazed porcelain piece, what color do you get?
Is it magnetic?

 

[Eu_citzen]

I was assuming silver based on assay of the vein material in that picture with well over 200 ounces per ton Ag. (18 ppm Au). Will run a 41 element suite assay on it and see what I get. Thank you for the reply. We all appreciate you sharing your knowledge on this forum.

Well, that seems sound. I'd first go with Acanthite, simple because I believe it to be fairly common.
I'd attribute the blue tinge to oxidization, as a guess.

That said, many silver sulphides are very similar and from a picture alone little can be said.

 

[Eu_citzen]

I believe this was found in Mariposa County California. I think its Serpentine, not sure though. Its soapy feeling and has little dark stones in it.View attachment 1496559View attachment 1496560

Looks like it to me!

 

[Eu_citzen]

This was also found in Mariposa County california . I posted on the "what is it" forum and some believe it may be petrified bone.
View attachment 1496561View attachment 1496563View attachment 1496564View attachment 1496565

It sure looks sedimentary, quartzite-ish?
Not sure if it's a fossil, though. Fossils isn't really my area.

 

[hvacker]

This was also found in Mariposa County california . I posted on the "what is it" forum and some believe it may be petrified bone.
View attachment 1496561View attachment 1496563View attachment 1496564View attachment 1496565

Maybe a bone stone.
Interesting.