ERTH 114 Earth Materials                                      

Quiz 5 Preparation


Give the chemical compositions of the following minerals:


orthoamphibole                                            (Mg,Fe)7Si8O22(OH)2

tremolite                                                        Ca2Mg5Si8O22(OH)2

actinolite                                                        Ca2Fe5Si8O22(OH)2

glaucophane                                                  Na amphibole

hornblende                                                    Ca2(Mg,Fe,Al)5(Al,Si)8O22(OH)8

staurolite                                                       Mg Fe Al hydrous silicate

epidote                                                           Ca Fe Al hydrous silicate

lawsonite                                                        Ca Al hydrous silicate

Tourmaline                                                    Mg Fe Al Li B hydrous ring silicate