what is the porosity and permeability of rose quarz?

Question

also need to know the porosity and permeability or sandstone and calcite............sorting of grain as well for those three

Answer 1

Well, I can only partly answer your questions.
Porosity is a measure of whether a rock has empty spaces in it. That's important because the rock could hold water or oil, for example.
Permeability is a measure of whether fluids can move around in a rock--are the pore spaces connected to each other or not? That's important because water or oil can't really move through rocks that are not permeable.

Sandstone, which is a rock made of small particles, can be very porous and very permeable--depending on how well the grains have been cemented together, and also whether it has fractures, etc.
Now..to the tricky part of your question: about rose quartz. Quartz is a mineral. A single crystal of quartz will have essentially zero porosity or permeability(unless its full of cracks). You could make a nice water bowl out of rose quartz because it wouldn't leak or soak up the water. But sandstone could be made entirely of rose quartz grains cemented together....So....the rose quartz sandstone could be porous and could be permeable...or not, depending on how well it was cemented.
Calcite...is a mineral. same story. A pure crystal would have essentially no porosity or permeability. But, calcite grains could make up a sandstone (see above). Also, limestone is made of calcite (or aragonite), and it can be both highly porous and permeable--that's why there are so many caves in limestone.

You don't ask a question about grain sorting, so I don't know how to respond. I'm guessing you want to know how it relates to porosity and permeabilty. Imagine dumping a bunch of marbles of the same size into a barrel. They would be perfectly sorted (same size and shape), and you could calculate how much water you could pore into the barrel to fill up the spaces between the marbles. Now imagine filling up the same barrel with items of all different shapes and sizes (poorly sorted). You could imagine that it could hole more water than the marble-filled barrel, UNLESS, PERHAPSyou happened to pore in lots of sand or other fine particles in with your big items.
Sandstone can be well-sorted (think of nearly pure quartz sand in sand dunes), or poorly sorted (think of sand in a river bottom).
Because rose quartz and calcite are minerals, they could be components of well sorted or poorly sorted sands. BUT, calcite is softer than quartz, so...it would be much less common in well-sorted sands--which tend to be, but not always, quartz- rich. Beach sand, for instance, can be moderately well-sorted and composed mainly of quartz sand but with tiny calcite shell fragments.

Answer 2

Water follows a gradient, usually created by gravity but also by induced pressure. Water can move easily through permeable rock types without reaching the surface. Groundwater travels through and is stored in aquifers (permeable, porous rocks) Movement is restricted by impermeable rock types called aquitards. These can be stratigraphic units (shales, cherts) or intrusive dykes/sills. This is how the wells you mentioned were contaminated. These wells would still need to be down gradient from the polluted one, either lower elevation (including same surface elevation but deeper well) or following a pressure gradient from nearby mountains.

Answer 3

have you looked on the british geological society's or american geological society's websites as they may give some help?

British Geological Society: www.bgs.ac.uk

U.S. Geological Society: www.usgs.gov