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Mineralogical Classification

The scientific classification of mineral species. For ID questions see Identity Help in How To section 
Subject Posts Last Post

Structure refinement and hydrogen bonding of ferrinatrite

by Marco E. Ciriotti
1 07/11/2019 10:05AM
Last Post by Marco E. Ciriotti

Crystal chemistry and properties of elpidite and its Ag-exchanged forms

by Marco E. Ciriotti
1 07/10/2019 05:33PM
Last Post by Marco E. Ciriotti

Crystal structure and XANES investigation of petzite

by Marco E. Ciriotti
2 07/08/2019 05:10AM
Last Post by Owen Missen

Pumiceous conglomerate is correct ? Attachments

by Andrea Oppicelli
5 07/05/2019 09:08PM
Last Post by Andrea Oppicelli

Modular structure of K analog of centrosymmetric labyrinthite

by Marco E. Ciriotti
1 07/03/2019 04:02PM
Last Post by Marco E. Ciriotti

Crystal chemistry of birefringent uvarovite solid solutions

by Marco E. Ciriotti
3 07/03/2019 07:45AM
Last Post by Uwe Kolitsch

Is there a free downloadable mineral classification list?

by kim a strange
6 06/28/2019 06:55AM
Last Post by kim a strange

Crystal structure of paratooite-(La), a superstructure of carbocernaite

by Marco E. Ciriotti
2 06/20/2019 06:05PM
Last Post by Uwe Kolitsch

IMA 2018-J = redefinition and crystal chemistry of samarskite-(Y)

by Marco E. Ciriotti
2 06/20/2019 01:12PM
Last Post by Pavel Kartashov

Structural iron in smectites with different charge locations

by Marco E. Ciriotti
1 06/20/2019 10:34AM
Last Post by Marco E. Ciriotti

New data on crystal structure of fiedlerite-1A from Lavrion slags

by Marco E. Ciriotti
1 06/19/2019 09:20AM
Last Post by Marco E. Ciriotti
This topic has been moved.

What is It?Chrysocolla?Gemsilica?Agate...? Attachments

by ram sati
  This topic has been moved.

Mineral evolution...

by Johannes Swarts (2)
1 06/08/2019 02:41PM
Last Post by Johannes Swarts (2)

Metavivianite

by Jeff Weissman
4 06/06/2019 09:53PM
Last Post by Frank K. Mazdab

Frankhawthorneite

by Jeff Weissman
3 06/04/2019 04:59PM
Last Post by Jeff Weissman

Geocronite and Jordanite

by Jeff Weissman
2 06/04/2019 04:48PM
Last Post by Uwe Kolitsch
This topic has been moved.

Silver wires? need help Attachments

by Bonifazi Marco
  This topic has been moved.

Crystal structure and hydrogen bonding system of römerite

by Marco E. Ciriotti
1 06/01/2019 02:28PM
Last Post by Marco E. Ciriotti

Modular structure of K-analog of centrosymmetric labyrinthite

by Marco E. Ciriotti
1 05/29/2019 02:43PM
Last Post by Marco E. Ciriotti

P analogue of chalcophyllite

by Jolyon & Katya Ralph
1 05/28/2019 11:50PM
Last Post by Jolyon & Katya Ralph

Single-crystal structure refinement of hydrotalcite

by Marco E. Ciriotti
1 05/28/2019 02:13PM
Last Post by Marco E. Ciriotti

Crystal chemistry of K-rich nepheline in nephelinite from Hamada, Shimane Prefecture, Japan

by Marco E. Ciriotti
1 05/28/2019 02:08PM
Last Post by Marco E. Ciriotti

Crystal structure and chemical composition of a possible new mineral of the murmanite group: Na2CaTi4(Si2O7)2O4(H2O)4

by Marco E. Ciriotti
1 05/28/2019 01:55PM
Last Post by Marco E. Ciriotti

Cation order in the crystal structure of ‘Ca-hingganite-(Y)'

by Marco E. Ciriotti
1 05/22/2019 10:47AM
Last Post by Marco E. Ciriotti

Bentorite: determination of crystal structure

by Marco E. Ciriotti
1 05/21/2019 09:18PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Corsite : Gabbro or diorite Attachments

by Andrea Oppicelli
  This topic has been moved.

A novel synthesis routine for woodwardite

by Uwe Kolitsch
2 05/13/2019 03:41PM
Last Post by Łukasz Kruszewski
This topic has been moved.

Tarnowitzite vs plumboan aragonite

by Stefan Koch
  This topic has been moved.
This topic has been moved.

What is this Attachments

by Michelle Woiton
  This topic has been moved.

Discovery of a zinc-rich mineral on the surface of lunar orange pyroclastic beads

by Marco E. Ciriotti
8 04/14/2019 12:19AM
Last Post by Ralph Bottrill

Crystal chemical study of the complex mineral chevkinite-(Ce)

by Marco E. Ciriotti
4 04/13/2019 09:41PM
Last Post by Łukasz Kruszewski

XANES and EPMA study of Fe3+ in chlorite: Importance of oxychlorite and implications for cation site distribution

by Marco E. Ciriotti
1 04/12/2019 01:46PM
Last Post by Marco E. Ciriotti

Chessboard structures: atom-scale imaging of homologues from the kobellite series

by Marco E. Ciriotti
1 04/12/2019 01:44PM
Last Post by Marco E. Ciriotti

Composition, paragenesis and alteration of the chevkinite group of minerals

by Marco E. Ciriotti
1 04/12/2019 01:27PM
Last Post by Marco E. Ciriotti

XRD and pair distribution function to determine anisotropic atomic displacement parameters of tridymite and cristobalite

by Marco E. Ciriotti
1 04/11/2019 06:31AM
Last Post by Marco E. Ciriotti

Chemical and structural variability in cubic spinel oxides

by Uwe Kolitsch
2 04/11/2019 06:26AM
Last Post by Marco E. Ciriotti

Jouravskite: refined data on the crystal structure, chemical composition and spectroscopic properties

by Marco E. Ciriotti
3 04/10/2019 10:20AM
Last Post by Łukasz Kruszewski

A single-crystal neutron diffraction study of wardite

by Marco E. Ciriotti
1 04/10/2019 09:45AM
Last Post by Marco E. Ciriotti

Crystal chemistry of chlormagaluminite

by Marco E. Ciriotti
4 04/09/2019 04:32PM
Last Post by Łukasz Kruszewski
This topic has been moved.

Nickel slag minerals Attachments

by Kuba Kornaga
  This topic has been moved.

Identifying protonated decavanadate polyanions

by Marco E. Ciriotti
1 03/27/2019 07:33PM
Last Post by Marco E. Ciriotti

Determination of V4+:V5+ ratios in the [V10O28]n– decavanadate polyanion

by Marco E. Ciriotti
1 03/27/2019 07:32PM
Last Post by Marco E. Ciriotti

Crystal chemistry of dorrite from the Eifel volcanic region, Germany

by Marco E. Ciriotti
1 03/21/2019 03:33AM
Last Post by Marco E. Ciriotti

Structural investigations on bredigite from the Hatrurim Complex

by Marco E. Ciriotti
1 03/21/2019 03:32AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Diamond? Attachments

by Tyler Jamison
  This topic has been moved.

A structure hierarchy for silicate minerals: sheet silicates

by Marco E. Ciriotti
1 03/14/2019 09:03AM
Last Post by Marco E. Ciriotti

New data on ferri-ghoseite in Sanbagawa quartz schist from the Iimori region

by Marco E. Ciriotti
1 03/11/2019 10:16AM
Last Post by Marco E. Ciriotti

Polarized Raman spectroscopy and lattice dynamics of potassic-magnesio-arfvedsonite

by Marco E. Ciriotti
1 03/11/2019 08:33AM
Last Post by Marco E. Ciriotti

Iron distribution in Fe-rich bustamite-type minerals

by Marco E. Ciriotti
1 03/11/2019 08:32AM
Last Post by Marco E. Ciriotti

Crystal-chemistry and vibrational spectroscopy of ferrinatrite

by Marco E. Ciriotti
1 03/11/2019 08:30AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Maybe the experts can figure this out Attachments

by Ashley Frady
  This topic has been moved.
This topic has been moved.

Tektite or Naturally tumbled Obsidian? Attachments

by Clark James
  This topic has been moved.
This topic has been moved.

Nevada Star Quartz inclusion ID Attachments

by Clark James
  This topic has been moved.
This topic has been moved.

Is this coral do you think? Attachments

by Mermaidinjeans
  This topic has been moved.

Trimeric As3+3O6 clusters in walentaite: Crystal structure and revised formula

by Marco E. Ciriotti
3 02/27/2019 02:59PM
Last Post by Marco E. Ciriotti

Algorithms for calculations of homologue order N in the homologous series of sulfosalts

by Marco E. Ciriotti
1 02/26/2019 01:35PM
Last Post by Marco E. Ciriotti

Gatelite supergroup minerals: recommended nomenclature and review

by Marco E. Ciriotti
1 02/26/2019 01:22PM
Last Post by Marco E. Ciriotti

IMA 2017-H = spinel supergroup

by Marco E. Ciriotti
1 02/26/2019 01:20PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Natural fluorite pyrite specimen cluster?

by Kevin Conroy
  This topic has been moved.
This topic has been moved.

Geode Attachments

by Naomi Lann
  This topic has been moved.
This topic has been moved.

Need help identifying large chunk of quartz(?) Attachments

by Celeste McCullough
  This topic has been moved.

Crystal structure and topological features of manganonaujakasite

by Marco E. Ciriotti
1 02/17/2019 05:06AM
Last Post by Marco E. Ciriotti

formula of Paramendozavilite

by Andreas Schloth
2 02/16/2019 09:34PM
Last Post by Łukasz Kruszewski

"... mass discreditation of metallic minerals and alloys"

by Uwe Kolitsch
1 02/03/2019 06:47PM
Last Post by Uwe Kolitsch

Metatorbernite

by Jolyon & Katya Ralph
30 02/01/2019 10:16PM
Last Post by W. Richard Gunter

Crystal-structure refinement and infrared spectroscopy of gem richterite and pargasite

by Marco E. Ciriotti
1 01/31/2019 10:44AM
Last Post by Marco E. Ciriotti
This topic has been moved.

What is it? My first gold nugget?it's huge!!help plz Attachments

by John John ruiz
  This topic has been moved.

Classification of the minerals of the graftonite group

by Marco E. Ciriotti
2 01/30/2019 04:10PM
Last Post by Knut Edvard Larsen

IMA 2018-A = crystal structure determination and redefinition of eztlite

by Marco E. Ciriotti
1 01/28/2019 02:56PM
Last Post by Marco E. Ciriotti

Mispickel.

by Reiner Mielke
19 01/13/2019 12:19PM
Last Post by Reiner Mielke

Blende?

by Reiner Mielke
10 01/12/2019 02:39PM
Last Post by Johan Kjellman
This topic has been moved.

Question about plaster from Igea - Spain Attachments

by Wilfred Hemme
  This topic has been moved.
This topic has been moved.

Is there ductile or malleable mineral ?

by Kelvin Dow
  This topic has been moved.
This topic has been moved.

Dinosaur tooth?? Attachments

by Noah Yuen
  This topic has been moved.

Identification of hydrogen species in alunite-type minerals by multi-nuclear solid-state NMR spectroscopy

by Uwe Kolitsch
1 01/02/2019 03:03PM
Last Post by Uwe Kolitsch
This topic has been moved.

What do you think this is? Attachments

by Trish Marciszewski
  This topic has been moved.
This topic has been moved.

Final ID on "brassy egg" Attachments

by Pam Jones
  This topic has been moved.
This topic has been moved.

Unidentified blue stone. Any info??? Attachments

by Noah Yuen
  This topic has been moved.

Refinement of the crystal structure of vlasovite from Burpala Massif (Russia)

by Marco E. Ciriotti
1 12/21/2018 10:30AM
Last Post by Marco E. Ciriotti

First terrestrial occurrence of tistarite at Mount Carmel, Israel

by Marco E. Ciriotti
1 12/19/2018 01:33PM
Last Post by Marco E. Ciriotti



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