Rock i found

Got, I'd guess granite or soapstone. Doubtless the clear layer was desposited during an era when not so windy or sandy

But I predict we'll soon get some really expert response

Thank you for your reply. How long do you think the clear layer was deposited? one year? 10 years?

Good q, Got. Mac et al where are u

It a kind of quartzite with distinct layering. You can see the grains and the staining. Itd be nat f you could find the "ledge" from which it was flaked off.
Seeing the rock In place is far better than seeing it sitting on a table. Part pf geology that the professionals do is to determine where the rocks started, when, an how they were deposited, Because knowing allthat they can derive "conceptual models" and you can compare the rock to other sites (All this is often needed to do things like "prospecting" or seeking out gemstones.

BTW, the rock looks like its been "worked" by human hands. See the chipping all around?

may be worked by humans, maybe not....i found it at work in the dirt parking lot while having lunch. it is located in pittston , PA. can you tell me more about quartzite? how is it formed? etc

Quartzite is a sandstone that has been compressed at levels that constitute metamorphism. This does look like high grade sandstones of the coal measures. We see this bright white color sandstone in Ohio nar Zanesville where they mine it for glass making.

Quartzite of course. I should turn in my credentials as rockhound