Any geologist here?

[PoorSucker]

Bought two stones from a Buddha dealer. 

The drop shaped looks like a tektite, what's the other one. 

Non magnetic. 

[rak sa_ngop]

The first one definitely looks like a classic tektite 'drop' composed of dirty glass from the condensation of vapourised earth material following a meteor impact (but not the meteor material itself). I have a very similar shaped and textured example and they seem to be pretty common finds in Thailand.

 

Is the second one the same density?  Can you tell from its heft if you bounce it in your hand? Glass is much lighter than most rocks you find lying around. It looks like it has a very similar pocked texture to the first sample. Probably a tektite as well but not 100 pc sure just going by the photos.

 

 

 

 

[PoorSucker]

1 hour ago, rak sa_ngop said:

 

Is the second one the same density?  Can you tell from its heft if you bounce it in your hand? Glass is much lighter than most rocks you find lying around. It looks like it has a very similar pocked texture to the first sample. Probably a tektite as well but not 100 pc sure just going by the photos.

 

 

 

 

Same density, defenitly not a tektite. 

No glass surface, looks more like pure silver ore. 

[PoorSucker]

1 hour ago, rak sa_ngop said:

Probably a tektite as well but not 100 pc sure just going by the photos.

Other photos in sun. 

 

[malathione]

Possibly micaceous schist, the second one. Possible mica of the muscovite variety. Hard to tell from these photographs.

[Thongkorn]

Manganese, if it is hard  and if you hold it you get your hands covered in black like lead from a Pencil, They use it in Steel manufacturing, I have seen carvings done from lumps of it. If you polish it it comes up shinning,

[Lacessit]

1 hour ago, Thongkorn said:

Manganese, if it is hard  and if you hold it you get your hands covered in black like lead from a Pencil, They use it in Steel manufacturing, I have seen carvings done from lumps of it. If you polish it it comes up shinning,

Manganese ore is heavy.

[atyclb]

i disagree, clearly kryptonite

[Skeptic7]

12 hours ago, atyclb said:

i disagree, clearly kryptonite

Nope, K is green & crystalline! 

[Rockhound]

The second one could be Molybdenite or Stibnite?

[PoorSucker]

Thanks all. 

It does leave any resedue like Manganese. 

Stibnite seems the closest call. 

[richard_smith237]

...its surely Fubarite... 

[Stocky]

On 3/31/2019 at 1:21 PM, PoorSucker said:

Stibnite seems the closest call. 

Stibnite has a specific gravity of around 4.6g/cm³, whilst tektite, which is largely silica, has an SG of about 2.6 - if you're saying they have a similar density then it's clearly not stibnite.

 

Have worked out the hardness? Does it leave a streak, if so what colour? Is it magnetic?

[PoorSucker]

2 hours ago, Stocky said:

Stibnite has a specific gravity of around 4.6g/cm³, whilst tektite, which is largely silica, has an SG of about 2.6 - if you're saying they have a similar density then it's clearly not stibnite.

 

Have worked out the hardness? Does it leave a streak, if so what colour? Is it magnetic?

No streak, still silver, not magnetic