What kind of minerals are they?

[Salvatore]

This rock I think is partial quartz but the other minerals or mineral not sure of.The size of it is large but the weight in comparison to size is very heavy and dence.Any help to identify it will be appreciated and educational too.On one side the darker material it is cubic in form and noticed some of the crystals are five sided in form too thru out the piece.

 

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[Eu_citzen]

You need better pics. All I can see/ID is quartz.

 

[Salvatore]

. Better Photos

 

[Eu_citzen]

Do a hardness & streak test on the metallic looking stuff.

 

[Salvatore]

When I get a chance will let you know the results from the hardness & streak test you mentioned.

 

[Salvatore]

Did streak test on a unglazed porcelain plate and the results show white powder but it's the porcelain material left behind. There's a deep scratch in plate from test too.

 

[Eu_citzen]

This might suggest you tested the quartz, which is quite hard. Or something else. Honestly, the pics are still to terrible to even make a wild guess of anything.
Best bet is to have someone look at it in person!

 

[Salvatore]

Ok will find someone to look at it in person. Took four more pictures of it outside in day light, maybe better view to analyze.

 

[DDancer]

As EU said, all I can see is quartz. Massive quartz with varying degree's of granular and semi-crystaline composition. As to the metalic's I suspect pyrites due to the red staining of the host material, red being iron, and its mixed in pretty thoroughly so a streak test would be difficult as will a hardness test. Quartz would dominate. Personally I'd knock a chunk off for an interior view and also to see how the materials break up for a better idea of composition.

 

[Eu_citzen]

As EU said, all I can see is quartz. Massive quartz with varying degree's of granular and semi-crystaline composition. As to the metalic's I suspect pyrites due to the red staining of the host material, red being iron, and its mixed in pretty thoroughly so a streak test would be difficult as will a hardness test. Quartz would dominate. Personally I'd knock a chunk off for an interior view and also to see how the materials break up for a better idea of composition.

I was actually thinking; perhaps it's a thin mica coating. What do you think?
It would explain the streak test, the streak plate would quickly work it's way trough to the quartz if the mica-layer is thin enough!

 

[DDancer]

There is that EU Not sure why I had not thought of it. So Salvator did you see anything that looked like glitter in the streak?

 

[Salvatore]

There was no signs of glitter in streak test.Tryed using inexpensive diamond tester on it and it kept intercating that it was diamond on tester.What doesn't make sense to me is the weight ratio in comparison to size seems very unusual, unless massive quartz is very dence in weight in comparison to another mineral of the same size.

 

[DDancer]

Depending on how compact the quartz is two pieces of the same material can have different weights, mass, but a specific gravity test would indicate that they were the same mineral. Simple measurement of mass is not a good way to compare materials. Diamond testers test for thermal conductivity and if sufficient metals are present will give a false positive . From your statement your comparing the specimen with another mineral the same size? A comparison of that sort can only be done between like minerals and as I stated and SG test would indicate they were the same mineral with some variation for impurities by other minerals.