Выращивание кристаллов

[golodny]

Сообщение от Arty

...почему же это нельзя рассматривать как минерал?

По определению. Хотя, если брать в негеологическом смысле, то для сахара прокатит значение (3), если он ни растение и ни животное, а для ниобия - (4), если его принимают с пищей Из Webster:
min-er-al n.
1. any of a class of substances occurring in
nature, usu. comprising inorganic
substances, as quartz or feldspar, of
definite chemical composition and usu.
of definite crystal structure, but
sometimes also including rocks formed by
these substances as well as certain
natural products of organic origin, as
asphalt or coal.
2. a substance obtained by mining, as ore.
3. any substance that is neither animal nor
vegetable.
4. any of the inorganic elements, as
calcium, iron, magnesium, potassium, or
sodium, that are essential to the
functioning of the human body and are
obtained from foods.
5. <minerals> Brit. MINERAL WATER.
adj.
6. of, pertaining to, or of the nature of a
mineral.
7. containing or impregnated with minerals.
8. neither animal nor vegetable; inorganic:
mineral matter.