Needing info on quartz infrared heater. Would like to find out which one consumers rate the highest. And how much area they cover. Does one break down more than others. What are the draw backs??? thanks
Water dissolves only the halite, hydrochloric acid dissolves only the calcite. Neither does anything to quartz. (Make sure it is a fresh surface). Halite has a hardness of 2 1/2, calcite 3, and quartz 7, so you could see which scratched the other, the quartz will not be scratched by the other two and the halite will not scratch either of the others. The calcite should scratch the halite only. The same volume of halite is not as heavy as the same volume of quartz, which in turn is not as heavy as the same volume of calcite. Specific gravities are 2.17, 2.6 to 2.65, and 2.71 respectively, so that might be a close one if you have small samples or imprecise equipment.
Hi. Experimentally? Quartz is silicon dioxide and is not soluble in water. Halite is sodium chloride and WILL dissolve in water. Not sure how to test for calcite.
The field guide for Rocks and Mineral of North America is a very good resource for this topic!
