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Light sensitivity of cinnabar crystals (Chatian Mine, China)? 1 , 2 ] 16 Tobi 23740 Feb 02, 2017 16:47Tom Tucker
Copper specimen from Zambia? 5 Pierre Joubert 10538 Jan 21, 2017 03:25Pierre Joubert
Epitaxial albite on microcline? 4 Josele 9972 Jan 18, 2017 14:01Josele
Spanish aragonite 4 Bob Carnein 8439 Jan 17, 2017 12:13Bob Carnein
Cristobalite / Libyan desert glass 3 Roger Warin 16839 Jan 16, 2017 11:27Roger Warin
Cechite from Ulldemolins 6 Cesar M. Salvan 15333 Jan 02, 2017 10:04Joan Rosell
Cristobalite in Lybian Desert Glass 7 Roger Warin 14394 Dec 25, 2016 08:45marco campos-venuti
Very unusual calcite crystal 5 Pete Richards 10158 Dec 22, 2016 06:28marco campos-venuti
Im loving this Beryl 5 texasdigger 9937 Dec 08, 2016 23:58Matt_Zukowski
Merelaniite - a new mineral from the famous tanzanite deposit 9 John Jaszczak 19707 Nov 26, 2016 13:30John Jaszczak
Please help identify this mineral/crystal. 1 , 2 ] 21 rhichens 31491 Nov 25, 2016 16:19James Catmur
Colorless crystals with sturmanite 6 Pete Richards 13690 Nov 25, 2016 11:29Roger Warin
Help needed identifying tumblestones 3 rick_bakker 8760 Nov 12, 2016 05:00prcantos
Turquoise-blue Fluorite from Cornwall UK 7 markbeckett 14590 Oct 15, 2016 11:11markbeckett
The Micro-World and inclusions in minerals 5 Elise 13066 Oct 05, 2016 13:04Elise
Why does Calcite fluoresce blue?? 1 , 2 ] 19 Parvin 38575 Sep 30, 2016 13:54CranCowan
What makes calcite white vs. colorless? 6 df 14165 Sep 30, 2016 13:31CranCowan
Quartz with Muscovite (variety fuchsite) from Itremo, Madagascar 8 geofossile 14459 Sep 30, 2016 07:17geofossile
Rare quartz crystals 6 Peter Seroka 13999 Sep 19, 2016 04:28Harjo
How quartz crystals are formed. 8 Pierre Joubert 15483 Sep 16, 2016 09:42Pierre Joubert
Help with Chromium-rich Tremolite 3 GneissWare 7198 Sep 08, 2016 13:10GneissWare
Question about preserving weddellite specimens 2 Jim 6795 Sep 01, 2016 06:50Jim
Help with identifying collector 9 John S. White 11743 Aug 25, 2016 14:39John S. White
Azurite/Malachite pseudomorphs 1 dontgogreen 5246 Aug 15, 2016 11:24Les Presmyk
Rutile 8 William Hope Handy 10687 Jul 25, 2016 13:53kushmeja
Could anyone tell me what's these are, and If I should keep them or throw them out 7 Susan Hern 11389 Jul 14, 2016 11:21Peter Megaw
Help with identification 2 metwerks 8202 May 31, 2016 07:58Peter Megaw
Could this be a very rare limestone shatter cone from the UK? 1 , 2 ] 18 James Hunt 33518 May 19, 2016 00:52James Catmur
Moor's head elbaite 0 Roger Warin 7586 May 11, 2016 10:48Roger Warin
Pericline 13 Josele 31905 May 10, 2016 16:25Roger Warin
Abellaite, new mineral species, the first new mineral species discovered in Catalonia 0 joan abella creus 8872 Mar 30, 2016 04:39joan abella creus
Iridescent cuprite from Milpillas 5 bob kerr 10748 Mar 17, 2016 16:29lluis
Best examples of trapiche emerald crystals? 1 , 2 ] 21 Jim 45108 Mar 14, 2016 13:33Elise
Trapiche Pezzottaite 4 Elise 14991 Mar 14, 2016 13:23Elise
What causes the blue color of the stones of the beaches of Flores, Indonesia? 9 Elise 18693 Mar 14, 2016 12:54lluis
Beryl with steep endings 7 Roger Warin 15664 Mar 09, 2016 18:21Edelmin
I need everyone's opinion on this specimen I found. 10 levi.nivison 19337 Feb 22, 2016 16:20Pete Modreski
Gold from Bastogne (Belgium) 0 Roger Warin 7711 Feb 21, 2016 16:58Roger Warin
Cuprian Gold 1 Roger Warin 6036 Feb 20, 2016 15:12alfredo
Mexican Calcite 2 Roger Warin 6835 Feb 19, 2016 07:52Roger Warin
Optical Mineralogy and Crystallography 5 Elise 14186 Jan 11, 2016 11:20Elise
Corundum localities 0 Elise 7823 Dec 31, 2015 14:19Elise
Lessons from crystal morphology of zunyite with a nod to sphalerite 1 Pete Richards 9728 Nov 26, 2015 09:14Elise
Strange planes in quartz 1 , 2 ] 25 Josele 50774 Nov 04, 2015 04:22Xueyan Jin
Strange kind of crystal growth of galena and sphalerite 5 Tobi 13332 Nov 03, 2015 22:26Xueyan Jin
On the ease of gypsum crystal growth. 2 vic rzonca 7338 Oct 28, 2015 10:01vic rzonca
Morphology of Amethyst from Windham County, Connecticut 2 kushmeja 9507 Sep 27, 2015 19:14Pete Richards
Natural Cleaved Corners In Fluorite: Damage Or Not? 2 Casimir Sarisky 8380 Aug 24, 2015 15:07Casimir Sarisky
Allanite-(La)? 6 lluis 22268 Aug 14, 2015 02:56Jordi Fabre
When Do Crystals Stop Growing? 1 , 2 ] 18 Screenname 39505 Jul 15, 2015 13:26NellsRocks
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