| Locality | Mineral(s) |
|---|
| Amethyst occurrence, Muqur District, Ghazni, Afghanistan | ⓘ Calcite, ⓘ Goethite |
| Pajcha Pata, Esteban Arce Province, Cochabamba, Bolivia | ⓘ Chert |
| Jenipapo pegmatite field, Itinga, Minas Gerais, Brazil | ⓘ Citrine |
| Medina, Minas Gerais, Brazil | ⓘ Quartz, ⓘ Smoky Quartz |
| Barros Cassal, Rio Grande do Sul, Brazil | ⓘ Quartzine |
| Dalbyover, Randers, Central Denmark Region, Denmark | ⓘ Calcite, ⓘ Flint |
| Rhyolitic lava flows, Reyran valley, Fréjus, Draguignan, Var, Provence-Alpes-Côte d'Azur, France | ⓘ Agate |
| Niefern-Öschelbronn, Enzkreis, Karlsruhe Region, Baden-Württemberg, Germany | ⓘ Quartz |
| Wurmlingen gypsum quarry, Rottenburg am Neckar, Tübingen, Tübingen Region, Baden-Württemberg, Germany | ⓘ Gypsum |
| Limestone quarry, Medenbach, Breitscheid, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany | ⓘ Smoky Quartz |
| Radau valley, Bad Harzburg, Goslar District, Lower Saxony, Germany | ⓘ Quartz |
| Gegen valley, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany | ⓘ Siderite |
| Jasmund Peninsula, Rügen Island, Vorpommern-Rügen, Mecklenburg-West Pomerania, Germany | ⓘ Calcite, ⓘ Chalcedony, ⓘ Flint, ⓘ Quartz |
| Dörnberg Mine, Olsberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany | ⓘ Chalcopyrite |
| Suttrop, Warstein, Soest, Arnsberg, North Rhine-Westphalia, Germany | ⓘ Malachite |
| Auf dem Stein quarry, Suttrop, Warstein, Soest, Arnsberg, North Rhine-Westphalia, Germany | ⓘ Baryte, ⓘ Malachite |
| Basalt quarry, Bockenau, Rüdesheim, Bad Kreuznach, Rhineland-Palatinate, Germany | ⓘ Agate, ⓘ Chalcedony, ⓘ Jasper, ⓘ Quartz |
| Büchenberg Mine, Elbingerode, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany | ⓘ Jasper |
| Weissenhäuser Strand (Weißenhäuser Strand), Wangels, Ostholstein, Schleswig-Holstein, Germany | ⓘ Chalcedony, ⓘ Flint, ⓘ Quartz |
| Eckernförde Bay, Rendsburg-Eckernförde, Schleswig-Holstein, Germany | ⓘ Flint |
| Papandayan volcano, Garut Regency, West Java Province, Indonesia | ⓘ Calcite |
| Josheghan-e-Kamoo, Kashan County, Isfahan Province, Iran | ⓘ Biotite, ⓘ Goethite, ⓘ Plagioclase |
| Lac Mort, Bionaz, Aosta Valley, Italy | ⓘ Muscovite |
| Chaz Duraz Mt. (Chaz Dura Mt.), La Thuile, Aosta Valley, Italy | ⓘ Chlorite Group |
| Colle della Croce, La Thuile, Aosta Valley, Italy | ⓘ Quartz |
| Baja Sardinia, Arzachena, Sassari Province, Sardinia, Italy | ⓘ Epidote, ⓘ Garnet Group, ⓘ Muscovite, ⓘ Orthoclase, ⓘ Quartz, ⓘ Smoky Quartz |
| Porticciolo, Rio Marina, Rio, Livorno Province, Tuscany, Italy | ⓘ Actinolite |
| Tadami, Minamiaizu District, Fukushima Prefecture, Japan | ⓘ Amethyst, ⓘ Quartz |
| Shikaribetsu Lake, Shikaoi (Shikaoi-Chō), Kato District, Tokachi Subprefecture, Hokkaidō Prefecture, Japan | ⓘ Opal |
| Inamuradake, Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima District, Kagoshima Prefecture, Japan | ⓘ Fayalite-Forsterite Series, ⓘ Hyalite, ⓘ Opal |
| Iodake (Iwodake; Ioudake), Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima District, Kagoshima Prefecture, Japan | ⓘ Magnetite |
| Main Crater, Iodake (Iwodake; Ioudake), Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima District, Kagoshima Prefecture, Japan | ⓘ Aegirine, ⓘ Anhydrite, ⓘ Aphthitalite, ⓘ Clinopyroxene Subgroup, ⓘ Copiapite Group, ⓘ Coquimbite Group, ⓘ Garnet Group, ⓘ Gypsum, ⓘ Quartz, ⓘ Wollastonite Group |
| Monogusa, Iodake (Iwodake; Ioudake), Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima District, Kagoshima Prefecture, Japan | ⓘ Opal, ⓘ Sulphur |
| Kerrouchene (Kerrouchen), Kerrouchen Caïdat, El Kbab Cercle, Khénifra Province, Béni Mellal-Khénifra Region, Morocco | ⓘ Chalcedony, ⓘ Quartzine |
| Touroug-El Hamda Quarries (Lhamda Mine), Melaab Caïdat, Goulmima Cercle, Errachidia Province, Drâa-Tafilalet Region, Morocco | ⓘ Amethyst |
| Aouli, Mibladen, Aït Oufella Caïdat, Midelt Cercle, Midelt Province, Drâa-Tafilalet Region, Morocco | ⓘ Agate, ⓘ Chalcedony |
| Bouismas (Bouismass), Tazenakht, Ouarzazate Province, Drâa-Tafilalet Region, Morocco | ⓘ Citrine, ⓘ Quartz |
| Karibib Constituency, Erongo Region, Namibia | ⓘ Citrine, ⓘ Quartz |
| Hopewell Farm 240, Outjo, Kunene Region, Namibia | ⓘ Chalcedony, ⓘ Pietersite, ⓘ Quartz |
| Rumipata, Ichuña District, General Sánchez Cerro Province, Moquegua, Peru | ⓘ Chalcedony, ⓘ Quartz |
| Perekatnoe, Neryungrinsky District, Sakha, Russia | ⓘ Citrine |
| Amalia, Mamusa Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa | ⓘ Quartz |
| Berbes mining area, Ribadesella, Asturias, Spain | ⓘ Smoky Quartz |
| Torsby, Värmland County, Sweden | ⓘ Amethyst, ⓘ Quartz |
| Degen, Lumnezia, Surselva Region, Grisons, Switzerland | ⓘ Calcite, ⓘ Quartz |
| Piz Vallatscha, Val Medel, Medel (Lucmagn), Surselva Region, Grisons, Switzerland | ⓘ Azurite, ⓘ Malachite |
| Piz Rondadura, Val Rondadura, Val Medel, Medel (Lucmagn), Surselva Region, Grisons, Switzerland | ⓘ Quartz, ⓘ Quartzite |
| Val Giuv, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Malachite |
| Emprema Muotta, Val Giuv, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Amethyst |
| Kalkspat-Lücke, Val Giuv, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Chabazite, ⓘ Pyrite, ⓘ Rock Crystal, ⓘ Stilbite Subgroup |
| Rotwichel, Val Giuv, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Muscovite |
| Val Milà, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Adularia, ⓘ K Feldspar, ⓘ Quartz |
| Piz Gannaretsch, Val Nalps, Tujetsch, Surselva Region, Grisons, Switzerland | ⓘ Chlorite Group, ⓘ Quartz, ⓘ Smoky Quartz |
| Turbhorn, Albrunhorn - Turbhorn area, Binn, Goms, Valais, Switzerland | ⓘ Calcite, ⓘ Goethite, ⓘ Muscovite, ⓘ Quartz, ⓘ Rutile |
| Fäldbach valley, Binn, Goms, Valais, Switzerland | ⓘ Actinolite-Tremolite Series |
| Pizzo Gallina, Nufenen pass area (Novena Pass area), Ägene Valley (Äginen Valley; Aeginen Valley), Ulrichen, Obergoms, Goms, Valais, Switzerland | ⓘ Anatase, ⓘ Pyrite, ⓘ Quartz |
| Stanley Butte, Stanley Mining District, Santa Teresa Mountains, Aravaipa Mining District, Graham County, Arizona, USA | ⓘ Garnet Group, ⓘ Quartz |
| Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA | ⓘ Agate, ⓘ Chalcedony, ⓘ Quartz |
| Hauser beds (Hauser Geode beds; Hauser Beds Mine), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA | ⓘ Amethyst, ⓘ Quartz |
| Perini Hill, Howard Springs, East Mayacmas Mining District, Lake County, California, USA | ⓘ Clear Lake Diamond, ⓘ Quartz |
| Bolinas, Marin County, California, USA | ⓘ Chert |
| Unnamed Cu-Zn prospect [1], Marble Mountains, San Bernardino County, California, USA | ⓘ Chrysocolla, ⓘ Smithsonite |
| Turtle Mountains, San Bernardino County, California, USA | ⓘ Chalcedony, ⓘ Quartz, ⓘ Quartzine |
| San Miguelito Canyon Road Diatomite outcrop, Lompoc, Santa Barbara County, California, USA | ⓘ Opal |
These are possibly similar items as determined by title/reference text matching only.
