550 .THE MINERALS OF THE CLYDE DRAINAGE AREA. 



47. Dolomite, (CaMg)C0 3 Gourock : Wanlockheacl : Toward : Cantyre. 



48. Magnesite, MgCO 3 Inch Moran, Loch Lomond. 



49. Siderite, FeCO 3 Lanarkshire and Ayrshire coal-fields as black- 



band, clayband and musselband ironstone, a variety having a 

 cone-in-cone structure at Temple : Possil : Rutherglen : Stewarton : 

 Lugton. 



50. Smithsonite (Calamine), ZnCO 3 Leadhills : Wanlockhead. 



51. Aragonite, CaCO 3 Dockra: Auchenharvie : Shettleston: Cariipsie: 



Greenock Hills : Dairy : Stevenson. 



52. Bromlite, (BaCa)CO 3 Leadhills : Wanlockhead. 



53. Witherite, BaCO 3 Leadhills : Wanlockhead. 



54. Strontianite, Sr. CO 3 Strontian. 



55. Cerusite, PbCO 3 Leadhills : Wanlockhead. 



56. Barytocalcite, BaCO 3 CaCO 3 Leadhills : Wanlockhead. 



57. Malachite, 2CuO. CO 2 . H 2 O Leadhills : Barrhead : Cowal : Aberfoyle. 



58. Azurite or Chessylite, 3CuO. 2CO 2 H 2 O Leadhills : Wanlockhead. 



OXYGEN-SALTS SILICATES. 



59. Orthoclase-Potash Feldspar, KAlSi 3 O 8 Arran : Bute : Kilpatrick : Cowal : 



Corriegills, Arran. 



60. Erythrite, a flesh-red variety of Orthoclase. Kilpatrick Hills. 



61. Weissegite, a variety of Orthoclase. Campsie Hills : Kilpatrick : 



Hartfield Moss. 



62. Murchisonite, a variety of Orthoclase. Arran. 

 62A. Plagioclase Series. Albite to Anorthite. 



63. Albite, NaAlSi 3 O 8 Cowal district. 



64. Oligoclase ? Cowal district. 



65. Labradorite, Ballantrae : and in the basaltic dykes of the 



district. 



66. Bytownite ? In the basalt dykes of Cowal. 



67. Anorthite, CaAloSi 2 O 8 Lendalfoot in dolerite. 



68. Christianite and Latrobite are the same as Anorthite. 



69. Enstatite, MgSiO 3 Lendalfoot. 



70. Bronzite, MgSiO 3 with Iron Lendalfoot. 



71. Bastite or Schiller-Spar, an altered Enstatite or Bronzite. Balhamie Hill. 



72. Hypersthene ? (FeMg)SiO 3 Strachur : Inveraray. 

 72A. Pyroxene Group. Composition various 



73. Augite, CaMgSi 2 O 6 with alumina Arran : Fairlie : Cowal. 



74. Diallage, Lendalfoot. 



75. Pectolite, HNaCo.,(Si.,O 3 ) 3 . Kilsyth : Girvan : Lendalfoot : Knockdolian 



Hill. 

 75 A. Amphibole Group. 



76. Anthophyllite, (MgFe)SiO 3 Girvan. 



77. Asbestos, comp. various Lochfineside : Girvan. 



78. Hornblende, comp. various Dunoon. 



79. Tremolite, CaMg s Si 4 O r > Inverarav. 



80. Actinolite? Ca(MgFe) 3 Si 4 O 12 Cowaf district. 



81. Mountain Leather, Leadhills: Strontian. 



82. Uralite, Dunoon. 



83. Riebeckite, 2NaFe(SiO 3 ).,FeSiO 3 Ailsa Craig. 



84. lolite or Cordierite, H 2 (MgFe) 4 Al 8 Si 10 < ) 37 Glenfine : Cowal. 



85. Garnet, composition various Gleiibucket : Strontian. 



86. Crysolite, (MgFe) 2 SiO 4 Kilpatrick and Renfrewshire Hills : Cowal 



district. 



87. Ferrite, an altered Chrysolite Gleniffer : Boylstone : Cowal district. 



88. Willemite, Zn 2 SiO 4 Wanlockhead. 



