Cochise College          Photos of Minerals

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                          Roger Weller, geology instructor

                          [email protected]
                                  copyright 2006-R.Weller
 

Mineral Information on:
natrolite

Chemical Group:  silicate  (zeolite)

Chemical Formula:  Na₂Al₂Si₃O₁₀.2H₂O

Color:  colorless, white, grayish, yellowish, red          Streak:   white

Hardness:  5         Specific Gravity:   2.25

Luster:  vitreous to pearly         

Cleavage:  one direction, perfect

Crystal Forms:  Orthorhombic system
        Often as radiating, fine acicular masses of crystals

Mineral Associations:  occurs with other zeolites in basalt

Identifying Characteristics: radiating acicular crystal clusters

Uses:

Occurrences:  New Jersey, USA; Nova Scotia, Canada