Interesting video from Mars

[Seattle]

https://www.youtube-nocookie.com/embed/PjQOebc8M_g
Are those flat rocks Mica?

[Kornee]

Mica? Mica's characteristic crystalline grain size scale is far, far below that of the evidently meter plus scale of sedimentary rock strata displayed there.
Without refreshing memory by an online search, iirc metamorphic schist and igneous granite are the prime manifestations of mica sheet crystals, as typical minor constituent, in terrestrial rock formations.
Why or how could Mars geology be expected to be radically different in that respect?

PS - what is interesting in that shot is the small rock perched atop the larger protruding formation, lower left view.
Obviously not a stable formation. Earthquakes Earth-tremors (geologically dormant presumably) and strong winds, must be rare around that nick of the woods.

OK so I have now belatedly watched the vid. That precariously perched rock has been dubbed 'the balanced rock'. Maybe a freak result of meteorite impact?

Amusing to hear the narrator use the royal 'we' and 'our', but I guess being employed by NASA allows that.

[Seattle]

Mica? Mica's characteristic crystalline grain size scale is far, far below that of the evidently meter plus scale of sedimentary rock strata displayed there.
Without refreshing memory by an online search, iirc metamorphic schist and igneous granite are the prime manifestations of mica sheet crystals, as typical minor constituent, in terrestrial rock formations.
Why or how could Mars geology be expected to be radically different in that respect?

PS - what is interesting in that shot is the small rock perched atop the larger protruding formation, lower left view.
Obviously not a stable formation. Earthquakes Earth-tremors (geologically dormant presumably) and strong winds, must be rare around that nick of the woods.

OK so I have now belatedly watched the vid. That precariously perched rock has been dubbed 'the balanced rock'. Maybe a freak result of meteorite impact?

Amusing to hear the narrator use the royal 'we' and 'our', but I guess being employed by NASA allows that.

I don't know the answer to my question. That's why it is a question.  
It does remind me of something that I've seen however. I go rock climbing on columnar basalt in an area of W.Washington called Frenchman Coulee.

The large columns there are obvious but there is some thinner horizontal rock in some areas near the base. It may just be a horizontal form of columnar basalt but it looks as if  you could just pull it apart like a sheet of mica (you can't) and it's not mica but I'm not exactly sure what it is (sheets of basalt)?

Anyway, I was just curious regarding the thinner, horizontal "sheets" in a couple of areas of this video.

[Kornee]

Right. I'm old enough to dimly recall fairly large sized mica windows used in old fashioned slow-combustion stove ovens. The windows were actually surprisingly large, considering what one typically encounters in common rocks:
https://www.ashevillemica.com/stove-plate-mica/
http://antiquestoves.com/mica/index.htm
Also used to be a preferred dielectric insulator in capacitors. Very high breakdown voltage, low dielectric loss, and excellent high temperature resistance.
Synthetic mica seems to be limited to flake size, but anyway that is getting away from Mars related.