Historical Review

7

    Piezoelectric and Optic Quartz Prospecting (1935–1945)

7

    Beginning of the Prospecting for Piezoelectric Quartz and Rock Crystal for Fusion (1945–1962)

9

    Prospecting on Rock Crystal and Veiny Quartz for Fusion (1963–1980)

9

    Final Period of Exploration and Summarizing of Data (1981–1991)

10

Geology of the Subpolar Urals and Main Deposits of Quartz

19

    Geology of the Subpolar Urals

19

    The Pelengichei-3 Deposit

22

    The Zhelannoe Deposit

26

    The Dodo Deposit

32

    The Puiva Deposit

37

Minerals of the Rock Crystal Veins

43

    Quartz

43

        Amethyst

56

    Native Elements and Carbides

58

    Halides

60

    Sulphides and their Analogs

61

    Sulphates, Tungstates, Vanadates

66

    Phosphates

69

    Сarbonates

73

    Oxides

83

    Silicates

95

        Feldspars

110

        Epidote Group Minerals

113

        Phyllosilicates

114

        Zeolites

118

Conclusions

120

Aсknowledgments

121

Bibliography

122

Index of Deposits and Occurrences

135

Index of Minerals

136