Un frasco de suspensión para la acidez estomacal está compuesto de con una proporción 12.8g hidróxido de magnesio y 11.9 g de hidróxido de aluminio, escribe las fórmulas correspondientes a estos dos compuestos: a)
b)

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

i believe the answer is true.