MineralsGroup3

= __ Minerals __ = is a naturally occuring, inorganic solid with a specific chemical composition and a definite crystalline structure

**Characteristics of a Mineral** Luster-the way light is reflected from its surface.

Streak- is the color of the powder left behind when the mineral is rubbed against a hard, rough surface

Cleavage-a mineral that splits relatively eays and evenly along one or more flat pieces

Fracture- is a mark left on a mineral when it has a chip or is completely broken -Uneven -Conchoidals

Hardness- is the ability of a mineral to resist being scratched. -Diamond is the hardest -Talc is the softest -Glass is 5.5 Density- is the amount of matter in a given space (mass/volume). Color- is easily observed, but not always a reliable characteristic for the identification of minerals. Magnetism occurs when there is an imbalance in the structural arrangement of the iron ions //chemical formula.// **Mineral Families ** ** Physical Properties of Minerals ** Special Properties- indentify minerals with the same phyiscal property, tasting or UV rays **                       [] **Extra Information:** -The study of minerals is called **mineralogy.** It includes mineral identification and description, the classification of mineral groups, and the study of where minerals occur.
 * Chemical Properties of a Mineral **
 * Actinolite**
 * Amber -**
 * Amblygonite**
 * Properties Of Some Common Minerals\ **
 * How You Can Tell Differences Between Minerals That May Look The Same :**