Different Formats for Different Numeric Values (Format Function) A user-defined format expression for numbers can have from one to four sections separated by semicolons. If the format argument contains one of the named numeric formats, only one section is allowed.
Hardness is a mineral's ability to resist being scratched. Minerals that are not easily scratched are hard. You test the hardness of a mineral by scratching its surface with a mineral of a known hardness. Mineralogists use Mohs Scale, shown in Table 3.2, as a reference for mineral hardness.
There are different ways for people to identify minerals. A few physical properties that are used include hardness, luster and streak color. Clicking on the Physical Properties of Minerals title will open up an interactive slideshow that introduces students to some physical properties of minerals.This interactive slide show exemplifying different physical properties used to identify minerals is a great way to introduce the concept. few physical properties that are used include hardness, luster and streak color. Clicking on the Physical Properties of Minerals title will open up an interactive slideshow that introduces students to some physical properties of minerals.