Top 100

A hitlist? Most prolific localities? Why? Is this useful? Is it fun? It's statistics...
(see our forum for discussions on what a "locality" is)
(list is indexed on "IMA valid minerals" ; TL=type locality (UM's + FF/FRL's count as TL)
(list made in 2008: last changed: 4 september 2017)

1-10
564 - Lavrion - 47 TL's (forum)
524 - Khibiny (Kukisvumchorr/Yukspor) - 130 TL's
429 - (Eifel volcanic region - 54 TL's (forum))
414 - Clara - 28 TL's (forum)
411 - Mont Saint Hilaire - 81 TL's (forum)
387 - Lovozero (Karnasurt/Alluayv) - 121 TL's
371 - Franklin/Sterling Hill - 87 TL's (forum)
351 - Jachymov - 60 TL's (forum)
327 - Broken Hill - 25 TL's
306 - Tsumeb - 75 TL's (forum)

11-20
304 - Schneeberg - 42 TL's (forum)
296 - Langban - 80 TL's (forum)
293 - Bellerberg - 26 TL's (forum)
        (Mindat says 214 minerals, but it's 290+ minerals, see here...
288 - Bisbee - 6 TL's
259 - Pribram - 10 TL's (forum)
256 - Vesuvius/Mte.Somma/Phlegrean Volcanic Complex - 64 TL's (forum)
235 - Ilimaussaq - 42 TL's (forum)
235 - Bou Azer - 8 TL's (forum)
233 - Hüttenberg - 16 TL's
214 - Ronneburg - 1 TL's

21-50
212 - St.Andreasberg - 7 TL's
212 - Mt.Isa-Cloncurry - 3 TL's
210 - Katanga Copper Crescent - 62 TL's (forum)
208 - Caldbeck Fells - 1 TL's
204 - Larvik plutonic complex - 30 TL's
202 - Banska Stiavnica - 0 TL's (forum)
194 - Freiberg - 14 TL's (forum)
191 - Tolbachik - 102 TL's
190 - Hagendorf - 23 TL's
189 - Wittichen - 18 TL's (forum)
186 - Dalnegorsk-Kavalerovo - 0 TL's
186 - Sta Eulalia - 0 TL's
182 - Val Graveglia, Gambatesa-Molinello-Cassagna - 18 TL's (forum)
180 - Schwaz-Brixlegg - 5 TL's (forum)
180 - Ste Marie aux Mines - 10 TL's
178 - Horni Slavkov - 8 TL's
178 - Bad Ems - 3 TL's (forum)
177 - Kovdor - 23 TL's
176 - Tintic - 8 TL's
176 - Zeehan - 5 TL's (forum)
173 - Kalahari (Wessels/N'Chwaning) - 25 TL's
170 - Gold Hill - 3 TL's
168 - Norilsk - 63 TL's
165 - St.Austell - 4 TL's
164 - Iron Monarch - 6 TL's
162 - Callington - 3 TL's
161 - Crestmore - 98 TL's
158 - Zlata Bana - 0 TL's
156 - Ehrenfriedersdorf - 5 TL's (forum)
156 - Marienberg - 3 TL's (forum)
156 - Goldstrike - 0 TL's
155 - Foote - 13 TL's
154 - Lengenbach-Turtschi dolomite outcrops - 44 TL's (forum)
154 - Palermo n.1 - 14 TL's
151 - Johanngeorgenstadt - 10 TL's (forum)
151 - Richelsdorf - 5 TL's (forum)

ranking 51-100: but still very special and famous ;-)
150 - Clear Creek/New Idrija - 20 TL's
145 - Harstigen - 12 TL's
147 - Nordmark - 9 TL's
144 - Chelyabinsk - 16 TL's
144 - Rudabanya - 0 TL's
143 - Ramsbeck - 3 TL's (forum)
141 - Clausthal-Zellerfeld - 3 TL's
139 - Agnes districts - 3 TL's
138 - Hatrurim - 16 TL's
138 - Galileia - 10 TL's
137 - Moctezuma/Bambolla/Bambollita - 25 TL's
137 - Ojuela - 6 TL's (forum)
137 - Carajas - 0 TL's
136 - Dara-i-Pioz - 36 TL's
135 - Zalesi u Javornika - 9 TL's
135 - Coldwell complex - 1 TL's
132 - Chuquicamata - 19 TL's (forum)
130 - Laacher See complex - 7 TL's (forum)
127 - Leogang - 3 TL's (forum)
126 - Liberec - 0 TL's
126 - Cervandone- Scherbadung region - 7 TL's (forum)
126 - Kawazu - 3 TL's (forum)
125 - Cap Garonne - 15 TL's (forum)
125 - Demix-Varennes - 3 TL's
124 - Bayan Obo - 17 TL's (forum)
124 - Kombat - 12 TL's
123 - Fossa / Volcano - 36 TL's (forum)
122 - Kongsberg - 2 TL's (forum)
122 - Mt. Bischoff - 0 TL's
122 - Wildermann - 0 TL's (forum)
121 - Montmins - 0 TL's (forum)
120 - Redziny - 0 TL's
118 - Silberbrunnle - 3 TL's
117 - Kremnitz - 0 TL's
115 - Vielsalm-Ottre-Bihain - 6 TL's (forum)
114 - Menzenschwand - 7 TL's (forum)
113 - Gold Quarry mine - 2 TL's
112 - Carrara - 2 TL's (forum)
112 - Bärensteinbruch - 0 TL's
111 - Chessy - 2 TL's (forum)
111 - Siglo XX - 6 TL's
111 - Thelenberg - 0 TL's
110 - Jeffrey mine, Asbestos - 4 TL's (forum)

ranking 101 and up: here are the most interesting ;)
109 - Penberthy Croft - 3 TL's
109 - Steinerleinbach - 0 TL's (forum)
108 - Kara Oba - 4 TL's
108 - Viitaniemi pegmatite - 2 TL's
107 - Mammoth - 10 TL's
107 - Brosso - 1 TL's (forum)
107 - Emmelberg - 0 TL's
106 - Graulai - 3 TL's (forum)
106 - Palhal - 0 TL's
104 - Oberschulenberg - 1 TL's (forum)
103 - Silver Coin - 8 TL's
103 - Dunton gem quarry - 4 TL's
103 - Nickenicher (Eicher) Sattel - 2 TL's
103 - Pöhla - 0 TL's
102 - Annaberg - 2 TL's (forum)
102 - Majuba Hill - 2 TL's
102 - Klöch - 1 TL's (forum)
102 - Bendada - 1 TL (forum)
101 - Grube Brüderbund - 0 TL's
101 - Magdalena district - 0 TL's
100 - Aris - 14 TL's
100 - Skelleftea - 4 TL's
099 - Creusa-Marécottes - 2 TL's (forum)
098 - Löhley - 5 TL's
098 - Buranga pegmatite - 3 TL's
098 - Moldava - 1 TL's
097 - TipTop - 12 TL's (forum)
097 - Silver Coin / Iron Point district - 8 TL's
095 - Sapucaia pegmatites - 8 TL's
095 - Mines de Costabonne - 0 TL's
094 - Bernic lake, Tango pegmatites - 8 TL's
094 - Baveno - 5 TL's (forum)
092 - Sitio do Castelo aka Folgosinho - 1 TL (forum)
091 - Rothenberg - 3 TL's
091 - Strickland pegmatite - 0 TL's
089 - Otto mountain - 14 TL's
088 - Ivittuut - 19 TL's
082 - Felbertal-Mittersill - 8 TL's (forum)
081 - Fuka - 12 TL's
081 - Smolnik - 3 TL's
081 - Rother Kopf - 3 TL's (forum)
080 - Blue Lizard - 15 TL's
079 - Khaidarkan - 9 TL's
078 - Francon Quarry - 10 TL's
077 - Karatau V-mines - 11 TL's
076 - Moschellandsberg - 6 TL's
075 - Riddarhyttan-Bastnäs - 10 TL's
073 - Buca della Vena - 12 TL's (forum)
073 - Vuoriyarvi alkaline-ultrabasic massif - 9 TL's
071 - Sacarîmb - 8 TL's
070 - Big Fish river - 7 TL's
070 - Lohley - 5 TL's (forum)
068 - Fillow quarry - 9 TL's
068 - Cerchiara - 8 TL's
067 - Allende meteorite - 19 TL's
065 - Punta de Su Seinargiu - 8 TL's
065 - Torr Works - 7 TL's
064 - Caldera di Sacrofano - 8 TL's
063 - Lakargi - 22 TL's
062 - Narssarssuk - 13 TL's (forum)
061 - Rapid Creek - 7 TL's
061 - Prabornaz - 6 TL's (forum)
055 - Allchar - 12 TL's (forum)
054 - Clue de Roua - 9 TL's (forum)
054 - Grand Reef - 7 TL's
053 - Uchucchacua - 7 TL's
051 - Big Creek-Rush Creek - 16 TL's
051 - El Dragon - 8 TL's (forum)
051 - Trimouns - 2 TL's (forum)
049 - Kobokobo - 14 TL's
048 - Jas Roux - 9 TL's (forum)
048 - Ploskaya-Keivy - 7 TL's
045 - Taylor Pit, Madoc - 9 TL's
045 - Doira Mara - 6 TL's
042 - Pereval - 10 TL's
041 - Stetind - 8 TL's
041 - Låven - 7 TL's
036 - Mounana - 9 TL's
036 - Monte Arsiccio - 5 TL's (forum)
035 - Searles Lake - 10 TL's
032 - Khatyrka meteorite - 12 TL's
031 - Tachgagalt - 7 TL's
031 - Packrat - 7 TL's
030 - Larderello - 6 TL's
029 - Solongo - 7 TL's
024 - Pacajake - 4 TL's
018 - Novofrolovskoye - 7 TL's
016 - Minas Ragra - 9 TL's
013 - Izalco - 8 TL's

If we missed a special one, please write it here in the forum
(this and this Mindat listing is included. Thanks to Jolyon for wasting time on this with me!)