It is probably not ideal and misleading.
I have been in several universities, both in the English speaking and non-English speaking world. I also attended multple international conferences. I have never seen the term "Tardimagmatic". Ever. Also, your "Exogenous" is much more commonly referred to as "supergene".
That said, most minerals ...
A genetic classification.
Endogenic: Magmatic, Metamorphic, Hydrothermal
Exogenic: Supergene, Sedimentary
For more on this please see Wenk, H. R., & Bulakh, A. (2016). Minerals: their constitution and origin. Cambridge University Press (second edition)
or the first edition of this book(2004).
The height of Everest above its base depends on where one considers its base to be - and this depends on which side of the mountain one looks.
According to Wikipedia,
reasonable base elevations for Everest range from 4,200 m (13,800 ft)
on the south side to 5,200 m (17,100 ft) on the Tibetan Plateau,
yielding a height above base in the range of 3,650 ...
Typically we are not answering Rock Id questions, though this is a somewhat unique question because the rock is unique. Your rock is likely a tufa (never heard it called tuffy). It is a rock that is formed when water with high carbonate content is released to the surface. Depending on the conditions at the surface the dissolved carbonate comes out of ...