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Could this be a very rare limestone shatter cone from the UK? 18 James Hunt 25170 May 19, 2016 00:52James Catmur
Moor's head elbaite 0 Roger Warin 6435 May 11, 2016 10:48Roger Warin
Pericline 13 Josele 21562 May 10, 2016 16:25Roger Warin
Abellaite, new mineral species, the first new mineral species discovered in Catalonia 0 joan abella creus 7729 Mar 30, 2016 04:39joan abella creus
Iridescent cuprite from Milpillas 5 bob kerr 8962 Mar 17, 2016 16:29lluis
Best examples of trapiche emerald crystals? 1 , 2 ] 21 Jim 36570 Mar 14, 2016 13:33Elise
Trapiche Pezzottaite 4 Elise 12404 Mar 14, 2016 13:23Elise
What causes the blue color of the stones of the beaches of Flores, Indonesia? 9 Elise 14748 Mar 14, 2016 12:54lluis
Beryl with steep endings 7 Roger Warin 13049 Mar 09, 2016 18:21Edelmin
I need everyone's opinion on this specimen I found. 10 levi.nivison 15397 Feb 22, 2016 16:20Pete Modreski
Gold from Bastogne (Belgium) 0 Roger Warin 6764 Feb 21, 2016 16:58Roger Warin
Cuprian Gold 1 Roger Warin 5075 Feb 20, 2016 15:12alfredo
Mexican Calcite 2 Roger Warin 5751 Feb 19, 2016 07:52Roger Warin
Optical Mineralogy and Crystallography 5 Elise 12177 Jan 11, 2016 11:20Elise
Corundum localities 0 Elise 6857 Dec 31, 2015 14:19Elise
Lessons from crystal morphology of zunyite with a nod to sphalerite 1 Pete Richards 8469 Nov 26, 2015 09:14Elise
Strange planes in quartz 1 , 2 ] 25 Josele 40730 Nov 04, 2015 04:22Xueyan Jin
Strange kind of crystal growth of galena and sphalerite 5 Tobi 10866 Nov 03, 2015 22:26Xueyan Jin
On the ease of gypsum crystal growth. 2 vic rzonca 6113 Oct 28, 2015 10:01vic rzonca
Morphology of Amethyst from Windham County, Connecticut 2 kushmeja 8054 Sep 27, 2015 19:14Pete Richards
Natural Cleaved Corners In Fluorite: Damage Or Not? 2 Casimir Sarisky 7140 Aug 24, 2015 15:07Casimir Sarisky
Allanite-(La)? 6 lluis 20008 Aug 14, 2015 02:56Jordi Fabre
When Do Crystals Stop Growing? 18 Screenname 33601 Jul 15, 2015 13:26NellsRocks
Differentiating between Aegerine and Arfvedsonite from Mt. Malosa, Malawi 12 Joseph DOliveira 17638 Jul 10, 2015 08:35cascaillou
Mineral photography setups 11 Scott LaBorde 25684 Jun 29, 2015 11:10Scott LaBorde
Faces in this Hellín Sulphur Crystal 2 prcantos 6207 Jun 20, 2015 03:50prcantos
How to identify bruising on specimens 9 Casimir Sarisky 11577 Jun 16, 2015 15:54GneissWare
My first pocket!!! 3 Jared3339 8040 Jun 15, 2015 01:36Reinhardt van Vuuren
Crystallography of Fujian Garnets 8 prcantos 16540 Jun 11, 2015 04:50prcantos
Miller-Bravais Indices: really necessary? 7 prcantos 14378 May 07, 2015 16:00prcantos
Optical calcite spar 8 Roger Warin 13820 Mar 30, 2015 04:28Duncan Miller
What would cause the shape of this cavity? 8 DJandLIMON111 13870 Mar 23, 2015 10:36DJandLIMON111
What should I buy to start testing what Rocks/minerals i have 8 Alex Kaminski 11215 Feb 18, 2015 11:51cascaillou
Moved: 2014 - International year of crystallography: for example, pyrite. 1 , 2 ] 34 Roger Warin 12661 Dec 30, 2014 15:35Martin Rich
Among the rarest minerals 8 Roger Warin 14933 Dec 22, 2014 17:34Roger Warin
Why quartz parallel association is not a twin? 3 marco campos-venuti 7030 Dec 20, 2014 18:25Mark Ost
Old labels of minerals 9 Roger Warin 21479 Dec 05, 2014 18:41Montanpark
Stibnite bent at 90° 2 Roger Warin 6196 Nov 23, 2014 16:44Roger Warin
Crystallography of some Respina Mine diploid pyrites 4 prcantos 8623 Nov 11, 2014 17:36prcantos
Discussing the tutorial "DIY Specific Gravity Kit (tutorial) - (19)" 2 Jordi Fabre 6058 Nov 04, 2014 11:44cascaillou
Alteration of feldspar crystals in granite from Elba Island (Italy) 2 marco campos-venuti 6432 Nov 03, 2014 05:13marco campos-venuti
Formation of 'blue lace agate' 14 Duncan Miller 25539 Sep 30, 2014 01:09Duncan Miller
Barytocalcite synthesis : fluorescent or not? 1 Parvin 5187 Sep 20, 2014 16:06colin robinson
Thermal Decomposition of Calcium Carbonate 1 Parvin 5056 Sep 17, 2014 15:04Peter Megaw
Corundum var. Sapphire and Ruby from same locality 10 MSrockhound 19840 Sep 15, 2014 04:48ACC79
Orbicular Hematite, Keswick, Cumbria, UK 8 bugrock 12428 Sep 12, 2014 12:48bugrock
Manganese Carbonate 4 Parvin 8195 Sep 12, 2014 08:49Charlotte
Fluorapatite Synthesis 8 Parvin 12548 Sep 11, 2014 12:42Parvin
Fluorescent Fluorapatite 0 Parvin 5080 Sep 05, 2014 14:08Parvin
Brookite - Crystal habit. 1 Roger Warin 6560 Sep 05, 2014 04:29Mark Holtkamp
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