For every 6, pass one quarter to the person on your right. 7. Roll for the center pot. When only one person is left holding quarters, he or she must roll for the center pot. 1  The player must roll a 1, 2, or 3 to win the pot. 2  If the player rolls a 4 and only has one quarter left, that quarter must go into the center pot.
Magnetite and other heavy minerals (dark) in a quartz beach sand (Chennai, India). Magnetite is sometimes found in large quantities in beach sand. Such black sands (mineral sands or iron sands) are found in various places, such as California and the west coast of the North Island of New Zealand.
Although other metallic minerals may mimic magnetiteâs color, luster, hardness and specific gravity, magnetite is the only common mineral that is magnetic. So a magnet is usually all that is needed to identify its presence. Magnetite crystals usually only occur when magma cools slowly enough for crystals to form and settle out of the magma.