Page 255 - A Practical Introduction to Optical Mineralogy

INDEX INDEX
rhodochrosite Table 3.1 stibnite 153, App. C troilite 150, App. C visual brightness 210
richterite 53 straight extinction 10, 201 tschermakite 47
riebeckite 51-2 strontianite Table 3.1 tungstate 175--6 witherite 240, Table 3.1
rotation (of polarised light) 213-17 substitution, coupled 34 wolframite 175-6 wolfram see wolframite
colours 213-17 sulphates 172--5 tungstenite 148 wolframite 175--6, App. C
exercise 5. 8 anhydrite 171-2 twinning wollastonite 32, 117
ruby 160 barite 172--3 reflected light 21 wood tin 159
ruby silvers 148-9 celestite 172-3 transmitted light 11 wurtzite 153, App. C
rutile 156, 164-5, App. C gypsum 174--5 wiistite 156
sulphides 138--54 ulvospinel 163, App. C, Table 3.2
sa.fflorite App. C arsenopyrite 139-41 uniaxial figures 9, 197-200
sanidine 71,--7 bornite 141-2 uniaxial indicatrix 184 zeolite group 34, 84, 129--30
sapphire 160 chalcocite 142-3 uralitisation 47 analcime-natrolite 130
saturation (colour) 210 chalcopyrite 143 uraninite 166--7 App. C chabazite-thomsonite 130
saussuritisation 80 cinnabar 144 mesolite-scolecite 130
scapolite 34, 117-18 cobaltite 144 vermiculite 60 zircon 30, 131
scheelite 176, App. C covellite 144--5 vesuvianite 30, 129 zoisite 63-4
schriebersite App. C digenite 142 idocrase 12 9 zoning
scratch hardness (Moh' s) 26 galena 145-6 Vickers hardness number (VHN) 22, 25--6, reflected light 21
sensitive tint 191 marcasite 14 7 Table 1.2 transmitted light 11
sericite 94 molybdenite 147
serpentine 7, 34, 119 pentlandite 148
antigorite 119 proustite 148-9
chrysotile 119 pyrargyrite 148-9
lizardite 119 pyrite 149-50
sheet silicates 32, 2.3 pyrrhotite 150-1
siderite 137-8, 240, Table 3.1 sphalerite 151-2
siderophyllite 93 stibnite 153
sign determination structures 3.3
biaxial 196, 4.20 tennantite 154
uniaxial 197, 4.21 tetrahedrite 154
silica group 12~3 sulphosalts 138-9, 146
coesite 121
cristobalite 123 taenite App. C
quartz 121-2 talc 34, 126--7, Table 1.2
stishovite 121 tarnishing 18, 209
tridymite 122 tektosilicates 34
sillimanite 10, 20, 39--40 coupled substitution 34
silver 179, App. C, Table 1.1 framework silicates 34
skutterudite App. C tennantite 154, App. C
sodalite 86 tetradymite 148, App. C
sorocilicates 30 tetrahedrite 154, App. C
spectral reflectance curves 204 thin section
spessartine 87-8 preparation 28, 1.11
sphalerite 151-3, App. C, Table 1.1 thucolite 167
sphene 30, 124 titanohematite 156
leucoxene 124 titanomaghemite 156
spinel165-6, App. C, Table 3.2 titanomagnetite 156, App. C
spinel group 157-8, Table 3.2 todorokite App. C
solid solution 3.10 topaz 30, 127-8, Table 1.2
unit cell3.9 tourmaline 30, 128--9
spodumene 116 dravite 128
stage (microscope) 4 elbaite 128
standard wavelengths 12, 209 schorl 128
stannite App. C tremolite-(ferro) actinolite 11, 46--7
staurolite 30, 125--6 tridymite 122--3
248 249