珪藻[keisou] diatom
珪藻土[keisoudo] diatomaceous soil
二酸化珪素[nisankakeiso] silicon dioxide (SiO2)
珪素[keiso] silicon (Si)
珪酸[keisan] silicic acid

珪砂[keisha] silica sand
珪石[keiseki] silica
珪性肺塵症[keiseihaijinshou] pneumonoultramicroscopicsilicovolcanoconiosis
珪素鋼[keisokou] silicon steel
珪素樹脂[keisojushi] silicone resin

黄鉄鉱[outekkou] iron pyrites
金鉱地[kinkouchi] gold field
原鉱[genkou] (raw) ore
鉱化[kouka] mineralize
鉱業[kougyou] mining industry

鉱山[kouzan] mine (ore)
鉱山技師[kouzangishi] mining engineer
鉱山業[kouzangyou] mining industry
鉱質[koushitsu] mineral
鉱床[koushou] ore deposit