How margin works. The margin feature on your Schwab brokerage account allows you to access your available margin cash by placing a trade or withdrawing cash. Higher balances may be eligible for lower interest rates.
An iron sulfide mineral, Pyrite is commonly found around the world in a variety of geological formations, from sedimentary deposits to hydrothermal veins, and as a constituent of metamorphic rocks. It forms in masses, stalactites, grains, globes, striated cubes or twelve-sided pentagonal dodecahedral crystals.
Iron pyrite is too hard for a knife blade to affect, but pure gold is soft and will show a scratch. Hit the specimen with a hammer. If you strike a piece of pyrite against hard metal or flint, you will get a spark. This well-known quality gives the mineral its name -- pyrite is Greek for of fire. Real gold will produce no sparks and should flatten under the hammerâs force.