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I am posting this picture and I am very interested to know what kind of this rock is it?

Where: Found this at my house. I live in rural area. One acre of land with few houses nearby...

Location: Pueblo West, Colorado

Country: United States

Let me know if you are not able to identify this rock, I can try and take some more pictures and try to move it around

enter image description here

I have them with me on my desk. It has white, yellow and a bit shiny silver color and some red color or brown on it..

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closed as off-topic by Jan Doggen, uhoh, Fred, Gimelist, daniel.neumann Aug 28 at 11:36

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions about rock identification requests are off-topic. For more information, see the announcement on meta." – Jan Doggen, uhoh, Fred, Gimelist, daniel.neumann
If this question can be reworded to fit the rules in the help center, please edit the question.

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Your pebbles are most likely are quartzite.

Quartzite (from German: Quarzit) is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts.

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  • $\begingroup$ Thank you... Do you think they were origin from the Rocky Mountains and rolling down from the top down to other places ? $\endgroup$ – PROBERT Apr 23 '18 at 17:24
  • $\begingroup$ I am certain the Rocky mountains are the source of the quartzite peebles. There are plenty of moderately metamorphic rocks in the region. Quartz is a very durable material for stream and alluvial transport so the source may not necessarily be close by. $\endgroup$ – Gary Kindel Apr 23 '18 at 18:24

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