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Achates, agate, 141-142, 147
Acies, steel, 182-183
Acopis, unknown stone, possibly pumice, 15, 144
Adamas, hard minerals, including diamond, corundum, quartz, 83, 112, 114, 116, 121-122, 124, 147
Adarce, porous saline deposits, 80
Aegophthalmos, eye-agate, 15, 142
Aegyptilla, agate, jasper, 117, 144
Aerodes, sky-blue beryl, 127
Aerugo, general
name for natural blue-green minerals; malachite pt., 13, 18, 36, 51,
52, 56, 177, 218, 219 artificial copper subacetate pt.; verdigris pt.,
177, 190, 196-197
Aes, metallic copper, 7, 169, 176-178, 187
Aes caldarium, refined brittle copper, 176
Aes candidum, native copper arsenides, 19
Aes nigrum, black copper oxides, teno-rite, 19
Aes regulare, refined yellowish copper, 176
Aes rubrum, cuprite, 19
Aes rude plumbei coloris, chalcocite, 207
Aeiites, geodes pt.; hollow concretions pt., 102-104, 164
Ageratus, probably an iron sulphate, 105
Alabandicus, almandite garnet, 109, 137
Alabandicus lapis, alabandite, 6, 109
Alabastrites, calcite, var. stalagmite pt.; gypsum pt., 112, 151, 156, 162
Alabastros, same as alabasiriies
Alana terra, clay or impure aluminum silicates, 34
Album hispanicum, tin acetate, 180
Alectorius, quartz, probably in part calculi, 145-146
Alexandrinus, smoky quartz, 139
Almandinus, almandite garnet, 136
Alumen, natural alums, probably including iron and magnesium sulphates, 5, 9, 45, 112, 188 asbestos, 93
Amandinus, garnet, possibly grossula-rite, 136
Ambra, amber, 71, 78
Ameniacum, (see armenium), 55-56
Amethystizon, rhodolite garnet, probably includes other purplish red minerals, 116, 135-136
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Amethystus, amethyst quartz, 108, 130-
131, 147 Amiantus, asbestos, 93-94 Ammochrysos, phlogopite, yellow musco-
vite, 95 Ammonis cornu, fossil ammonites, 14,
95, 98 Ammonites, carbonate concretions, 99 Ammonitrum, an artificial glass, 110 Ampelitis, coal, 66, 67, 70 Ampelitis cinerea, bituminous earth, 218 Amphitane (amphitanis), possibly chrys-
ocolla with sulphide residuals, 86 Anachites, diamond, 121 Anatachates, natural resin, possibly
retinite, 79, 112 Androdamas, probably diamond, possibly magnetite pt., 14, 122-124 Anieros, amethyst quartz, 131 Anthracites, goethite, hematite, 87 Aniipalhes, black coral, 81, 88, 166 Aphrodisiace, cryptocrystalline quartz,
probably agate, 6, 16, 144 Aphronitrum, natural hydrous sodium
carbonate, 13, 42-44 Apsyctos, cryptocrystalline quartz, 6,
116, 144 Arabica, gem stone cut from marble,
112, 148, 149 Arabicus, marble, 112 Argentaria, clay, 28, 31
stone containing silver or quicksilver,
220 Argentum, silver, 8, 169, 172-174 Argentum rude album, tetrahedrite pt.;
probably sylvanite, amalgam, etc.,
204, 206-207 Argentum rude cineraceum, tetrahedrite
pt.; cerargyrite pt., 204, 207 Argentum rude jecoris colore, silver
haloids, principally cerargyrite, 204,
207 Argentum rude luteum, silver tellurides
pt., 207 Argentum rude nigrum, stephanite pt.;
polybasite, etc., 204, 207 Argentum rude plumbei coloris, argentite,
204-205 Argentum rude purpureum, sternbergite
pt., 204, 207 Argentum rude purum, native silver,
172-174, 204 Argentum rude rubrum, pyrargyrite, 204,
205-206, 207
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