1. name the igneous rock in which crystals of biotite mica are larger than 10 mm in diameter.

2. Identify the luster, hardness, and dominant form of breakage for members of the mica family.

3. Large crystals of mica, sometimes weighing several hundred tons, have been found in igneous
rock in Canada. Identify the environment of formation and the relative rate of cooling of the magma
that formed the igneous rock containing these large crystals.

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean