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Tarnish on cubanite 9 Pete Richards 17346 Apr 24, 2023 14:20Roger Warin
What should we do with our collections? Special event on Zoom - Wednesday 19 April 20:00 B 12 Roy Starkey 21046 Apr 23, 2023 17:02James Catmur
Calcite geode from Idar 2 Roger Warin 6012 Apr 21, 2023 18:27Linus
Problem with identification 6 mineralowitz 9989 Mar 29, 2023 10:17Bob Carnein
A very strange specimen of Hardin Co., Illinois 6 k-m.minerals 11616 Mar 17, 2023 00:52k-m.minerals
Azurite to Malachite pseudomorphs 0 RayStraw 15024 Feb 26, 2023 17:50RayStraw
Mineral Labeling: how to properly acknowledge specimen is from an earlier collection 7 Frank Perry 8890 Feb 24, 2023 04:07James Catmur
Diamond pseudomorphs after graphite 8 James Catmur 9135 Feb 22, 2023 05:12James Catmur
Galena Spinel law 8 John Hodgson 10917 Feb 13, 2023 03:55Tobi
Can alpha radiation from titanite, zircon, etc. affect other mineral specimens? 4 Garret 6598 Feb 10, 2023 19:05Amir Akhavan
Elbaite from Pala ? 1 Roger Warin 5338 Feb 05, 2023 23:43Jesse Fisher
Unique Schorl Double Terminations 1 , 2 ] 19 bob kerr 18398 Jan 26, 2023 15:42Roger Warin
About the tourmaline twin 6 Roger Warin 11336 Jan 07, 2023 10:50Pete Richards
Oxidation of Copper, Lead, and Zinc sulfides and transport below the surface 4 RayStraw 9027 Jan 04, 2023 15:22Pete Modreski
Shielding effect of pyrite solid inclusions in a Colombian emerald crystal 1 Fiebre Verde 6215 Dec 26, 2022 05:55James Catmur
Minerals to be found in only one location 10 David 15814 Dec 08, 2022 15:03lluis
Zunyite from Canada 6 Roger Warin 9259 Nov 30, 2022 12:54alfredo
How hard is it to find a new mineral species? 10 David 11476 Nov 27, 2022 14:37Roger Warin
A new mineral species: pendevilleite 2 Roger Warin 6822 Nov 23, 2022 15:32Roger Warin
First 100 IUGS Geological Heritage Sites 7 James Catmur 9795 Nov 05, 2022 01:58Philippe Durand
Philip Rashleigh’s Mineral Collection at the Royal Cornwall Museum and Why It Is Important 5 Roy Starkey 9300 Sep 28, 2022 16:31Roy Starkey
Calcite is acting strange under UV 11 Forrestblyth 16611 Aug 08, 2022 22:33alfredo
Question about Rutile, Brookite and Anatase 4 Paul Biehler 7976 Jul 22, 2022 09:42Paul Biehler
Nature used 57 recipes to create Earth's ~10,500+ minerals! 1 Peter Lemkin 7107 Jul 03, 2022 11:46Peter Lemkin
Spherical inclusions in amethyst - cristobalite? vs fluorite 1 , 2 ] 15 Amir Akhavan 17376 Jun 30, 2022 14:20Roger Warin
Red fluorescence in Fluorite 13 Bob Carnein 25986 Jun 29, 2022 08:43Bob Carnein
Crystallography question 6 Bob Carnein 8043 Jun 17, 2022 14:53Bob Carnein
Elbaite, ending moor's head 9 Roger Warin 10971 Jun 11, 2022 18:31Johan Kjellman
How long does it take for a crystal to form? 13 h.abbasi 17193 Jun 04, 2022 00:38Peter Lemkin
Es -Semara Chalcedony 4 Amir Akhavan 6129 May 26, 2022 07:36Bob Morgan
Calcite in Malkhan elbaite 8 Roger Warin 8289 May 19, 2022 14:00Roger Warin
Help with mineral identification in thin section from Khibiny, Kola peninsula 6 Daniel Garcia 7801 May 16, 2022 08:20Daniel Garcia
Tourmaline - Quartz epitaxy? 7 Josele 9017 Apr 24, 2022 09:01Josele
Forms Involved in Titanite Crystal 1 , 2 ] 19 Josele 21059 Apr 22, 2022 14:58marco campos-venuti
Unusual habit for Pyrite. 1 , 2 ] 28 Sante Celiberti 28128 Mar 25, 2022 19:25Bob Morgan
Conoscopy of elbaite 0 Roger Warin 14448 Mar 14, 2022 09:19Roger Warin
Martian minerals 1 James Catmur 3780 Mar 05, 2022 06:08SteveB
Epitaxial rutile 1 , 2 ] 19 Josele 46744 Feb 27, 2022 18:28Bob Morgan
Russell Society Monthly Virtual Talk by James Catmur – A guide to Spanish e-mineralogy 4 Roy Starkey 5781 Feb 14, 2022 14:32Jordi Fabre
Two questions on Bolivian danburite 8 Antonio Alcaide 14878 Nov 14, 2021 14:54vhairap
All the Diamonds one could fill your house with - and more - so near...yet so far..... 10 Peter Lemkin 18807 Nov 13, 2021 00:15Peter Lemkin
James Madison University Mineral Museum 0 John S. White 15132 Nov 07, 2021 10:19John S. White
Conditions where pyrite/pyritohedra are formed 1 , 2 ] 16 LDMarks 18794 Oct 12, 2021 15:49Sante Celiberti
Just how fast can the crystals we love and collect grow?! 5 Peter Lemkin 9022 Oct 05, 2021 06:44Peter Lemkin
About calaverite from Creeple Creek 2 Roger Warin 6240 Oct 03, 2021 13:53Roger Warin
Malachite stalactites, Katanga Province 2 Roger Warin 4909 Sep 18, 2021 05:25Jordi Fabre
Ajoite From Messina 3 Roger Warin 5364 Aug 27, 2021 22:45Roger Warin
Mineral spirituality? 1 , 2 ] 29 Tracy 99733 Aug 27, 2021 01:28Peter Lemkin
Rarest beautifully crystallized minerals 4 David 7151 Aug 17, 2021 08:15Jordi Fabre
Tsumeb - Deposit of dioptase on calcite. 3 Roger Warin 6352 Aug 04, 2021 18:39SteveB
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