How do you decide which type of pendulum you should use? What is the difference if it is rose quartz?
Sand is oftentimes made up of grains of quartz, so maximum sandstones would be quartz wealthy. different sedimentary rocks (eg some limestones) may additionally contain small fractions of quartz sand. Quartz is likewise a considerable ingredient of granite. Calcite is generally present day in association with limestone. It varieties colourless translucent crystals which could be pointed out via their reaction with acid.
Looks like calcite to me but identification is not one of my strong points so i could be wrong.
Without having the specimen in one's hands it is difficult to give a definitive answer but the crystal group in the pictures has an absolutely typical structure of Selenite which is a form of Gypsum CaSO4.2H2O It is very common in the area where I grew up and specimens of it formed a large part of my childhood collection. A simple test to distinguish it from calcite, which it can closely resemble, is to touch an out of the way area of the specimen with a drop of acid - calcite will fizz selenite will not react. Hope that helps a little.
Hello everyone, this is the same fellow who asked this question. My original yahoo answers account was deleted after I switched my ISP, because ATT is evil. Thanks to everyone for their input. I am very sorry that I am unable to pick a best answer, but I cannot access the account that I asked this question under. Thank you all for being so understanding. I tested the calcite theory with some sulfuric acid I I did get a slight reaction, so that answer appears to be correct. Nice call! I'll probably be asking some more identification questions in the future if I ever get my points transferred.
