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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
This topic has been moved.

Chemical name reference

by Jeff Joy
  This topic has been moved.

Quartz and Humboldtine from Cabiche, Boyaca, Columbia

by John Rakovan
3 10/06/2018 08:26PM
Last Post by John Rakovan

On the labyrinthine world of arsenites: a single-crystal neutron and X-ray diffraction study of cafarsite

by Marco E. Ciriotti
1 09/26/2018 05:56AM
Last Post by Marco E. Ciriotti

Crystalline structure investigation and high-pressure behavior of impurity-free siderite

by Marco E. Ciriotti
1 09/26/2018 05:49AM
Last Post by Marco E. Ciriotti

Calciobritholite

by Reiner Mielke
24 09/24/2018 11:33PM
Last Post by Reiner Mielke

Euphoralite Attachments

by Kathryn Horkley
3 09/24/2018 01:20AM
Last Post by Paul Brandes

Crystal chemistry of schoonerite-group minerals

by Marco E. Ciriotti
2 09/20/2018 12:59PM
Last Post by Luís Martins

Pectolite, murakamiite, schizolite, serandite and tanohataite relationship

by Marco E. Ciriotti
1 09/20/2018 11:47AM
Last Post by Marco E. Ciriotti

First natural hexaferrite with mixed β'-ferrite (β-alumina) and magnetoplumbite structure from Jabel Harmun, Palestina

by Marco E. Ciriotti
1 09/20/2018 11:44AM
Last Post by Marco E. Ciriotti

Incorporation of Co in the rosasite–malachite carbonate group

by Marco E. Ciriotti
1 09/20/2018 11:43AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Anybody care to identify this unknown material? Attachments

by Ignacio Rios Jr.
  This topic has been moved.

Structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region

by Marco E. Ciriotti
2 09/15/2018 06:45PM
Last Post by Uwe Kolitsch

Mn-bearing eleonorite from Hagendorf South pegmatite: crystal structure and crystal-chemical beraunite relationships

by Marco E. Ciriotti
4 09/15/2018 06:43PM
Last Post by Uwe Kolitsch
This topic has been moved.

Schrol Crystal Cluster? Attachments

by Eric Blakey
  This topic has been moved.

New occurrence of rusinovite: Structure and Raman data on specimen from Shadil-Khokh Volcano and Bellerberg

by Marco E. Ciriotti
1 09/10/2018 02:41PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Help identifying minerals Attachments

by Aaron Lynch
  This topic has been moved.
This topic has been moved.

Help identifying please! Attachments

by Catherine Loughran
  This topic has been moved.
This topic has been moved.

Arfvedsonite Attachments

by Sabrina Nicholson
  This topic has been moved.

Tausonite

by Kraka Doros
2 08/19/2018 05:45PM
Last Post by Pavel Kartashov

The crystal structures of Pb5Sb4S11 (Boulangerite) – a phase transition explains seemingly contradictory structure models

by Uwe Kolitsch
1 08/18/2018 08:52PM
Last Post by Uwe Kolitsch

Structure of nollmotzite, the first natural uranium-oxide containing fluorine

by Marco E. Ciriotti
3 08/10/2018 11:22AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Chert or something else?

by Norman King
  This topic has been moved.

Dynamic disorder of Fe3+ ions in the crystal structure of natural barioferrite

by Marco E. Ciriotti
1 08/08/2018 10:45AM
Last Post by Marco E. Ciriotti

Crystal structure of titanium-rich eudialyte from the Kovdor Alkaline Massif

by Marco E. Ciriotti
1 08/08/2018 10:43AM
Last Post by Marco E. Ciriotti

Jinshajiangite: structure, twinning and pseudo­symmetry

by Marco E. Ciriotti
1 08/03/2018 02:39PM
Last Post by Marco E. Ciriotti

Kurchatovite and clinokurchatovite: Example of modular polymorphism

by Marco E. Ciriotti
1 08/03/2018 10:06AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Brochantite from Zambia Attachments

by Hans-Jürgen Haas
  This topic has been moved.

Crystal structure of hanksite

by Marco E. Ciriotti
1 07/26/2018 09:03AM
Last Post by Marco E. Ciriotti

Re-investigation of shkatulkalite

by Marco E. Ciriotti
1 07/18/2018 05:41PM
Last Post by Marco E. Ciriotti

Vanadium-bearing Oxide Minerals of the Green Giant Vanadium-graphite Deposit, Southwest Madagascar

by Marco E. Ciriotti
1 07/17/2018 06:03PM
Last Post by Marco E. Ciriotti

Edgarite: solution of the crystal structure

by Marco E. Ciriotti
1 07/17/2018 06:01PM
Last Post by Marco E. Ciriotti

The location of Mn (MnO: 2.0 wt%) in fluorapatite from Lavra da Golconda, Brazil

by Marco E. Ciriotti
4 07/09/2018 03:56PM
Last Post by Luís Martins

Crystal structure refinement and chemical formula of prosopite

by Marco E. Ciriotti
2 07/08/2018 03:50PM
Last Post by Uwe Kolitsch

Crystal structures and evolution of structural complexity of quintinite polytypes from the Kovdor alkaline massif

by Marco E. Ciriotti
1 07/04/2018 10:00AM
Last Post by Marco E. Ciriotti

Rare-earth crystal chemistry of thalénite-(Y) from different environments

by Marco E. Ciriotti
1 07/04/2018 09:58AM
Last Post by Marco E. Ciriotti

Zeolitic water in strunzite-group minerals

by Marco E. Ciriotti
1 07/04/2018 09:57AM
Last Post by Marco E. Ciriotti

Embreyite: structure determination, chemical formula

by Marco E. Ciriotti
1 07/04/2018 09:57AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Locality of this 'candle' quartz Attachments

by Anthony Scoffler
  This topic has been moved.

Mertieite-II, Pd8Sb2.5As0.5, crystal structure refinement and formula revision

by Marco E. Ciriotti
1 06/19/2018 11:01AM
Last Post by Marco E. Ciriotti

Britholite Oka Quebec

by Richard Gunter
25 06/18/2018 03:23PM
Last Post by W. Richard Gunter
This topic has been moved.

I made natrolite on accident?!?!?! Attachments

by Nbj1987
  This topic has been moved.

Lonsdaleite

by Reiner Mielke
2 06/06/2018 04:32PM
Last Post by David Von Bargen

Article: Confusion over the description of the quartz structure yet again

by Uwe Kolitsch
1 06/06/2018 11:45AM
Last Post by Uwe Kolitsch

IMA 2016-G = girdite discreditation

by Marco E. Ciriotti
4 06/06/2018 11:06AM
Last Post by Uwe Kolitsch
This topic has been moved.

What's inside this agate slice? Attachments

by Eugene
  This topic has been moved.

Structure of low-temperature polar (orthorhombic) phase of russellite (Bi2WO6)

by Uwe Kolitsch
2 06/04/2018 08:47PM
Last Post by Marco E. Ciriotti

Structure of russellite: Origin of ferroelectricity and the effect of stereoactive lone electron pair on the structure

by Marco E. Ciriotti
2 06/04/2018 02:58PM
Last Post by Uwe Kolitsch
This topic has been moved.

Fluorite location ID Attachments

by Joy Horn
  This topic has been moved.
This topic has been moved.

Help identify some rocks Attachments

by Kayla Marie
  This topic has been moved.
This topic has been moved.

Identification of Indian zeolites

by Becky Coulson
  This topic has been moved.

Gersdorffite - what happened?

by Jeff Weissman
5 05/22/2018 09:47AM
Last Post by Uwe Kolitsch

IMA 2017-F = montbrayite crystal structure and redefinition

by Marco E. Ciriotti
1 05/21/2018 09:26PM
Last Post by Marco E. Ciriotti

Orthoclase var. Paradoxite

by Ed Clopton
18 05/21/2018 01:06PM
Last Post by Jolyon & Katya Ralph

The crystal structure of schoepite revisited

by Luc Vandenberghe
1 05/05/2018 03:59PM
Last Post by Luc Vandenberghe
This topic has been moved.

Need help Identifying my rock Attachments

by Chris Silva
  This topic has been moved.

Structure of low-order hemimorphite produced in a Zn-rich environment by cyanobacterium Leptolingbya frigida

by Marco E. Ciriotti
1 05/02/2018 05:11PM
Last Post by Marco E. Ciriotti

Revisiting the crystal structure of dickite

by Marco E. Ciriotti
1 05/02/2018 05:01PM
Last Post by Marco E. Ciriotti

Molecular dynamics study of tridymite

by Marco E. Ciriotti
1 05/02/2018 09:06AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Graves Mountain Specimens Attachments

by Matthew Hansen
  This topic has been moved.

IMA 2015-K = redefinition of thérèsemagnanite: new data and identity to the discredited “cobaltogordaite”

by Marco E. Ciriotti
1 04/18/2018 09:33AM
Last Post by Marco E. Ciriotti

The crystal structure of ceruleite from Cap Garonne, France

by Marco E. Ciriotti
1 04/18/2018 09:31AM
Last Post by Marco E. Ciriotti

Another step toward the solution of the real structure of zinkenite

by Marco E. Ciriotti
1 04/13/2018 12:45PM
Last Post by Marco E. Ciriotti

The incommensurately modulated crystal structure of roshchinite

by Marco E. Ciriotti
1 04/13/2018 12:44PM
Last Post by Marco E. Ciriotti

Stützite crystal structure determination

by Marco E. Ciriotti
1 04/13/2018 12:43PM
Last Post by Marco E. Ciriotti

Reexamination of the crystal structure of semseyite

by Marco E. Ciriotti
1 04/13/2018 12:41PM
Last Post by Marco E. Ciriotti

Hydro­cerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy

by Uwe Kolitsch
4 04/12/2018 05:05AM
Last Post by Andrew G. Christy

Crystal structure and hydrogen bond system of melanterite

by Marco E. Ciriotti
5 04/06/2018 03:33AM
Last Post by Martin Rich

Crystal chemistry of agardite-(Ce) from the Clara mine

by Uwe Kolitsch
3 04/04/2018 11:36PM
Last Post by Stuart Mills

Redefinition of zircophyllite

by Marco E. Ciriotti
4 03/27/2018 02:08PM
Last Post by Reiner Mielke

Ericssonite group of Fe3+ disilicate minerals

by Marco E. Ciriotti
1 03/27/2018 07:42AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Green Dematoid/Grossular Garnet. Tsavorite location based? Attachments

by Logan B.
  This topic has been moved.
This topic has been moved.

Anybody know if this beryl crystal is of good quality form Connecticut? Attachments

by Lucas Brown Lucas
  This topic has been moved.
This topic has been moved.

Calcite or celestite/angelite Attachments

by Sandra Conte
  This topic has been moved.
This topic has been moved.

Anybody remember what these are called? Attachments

by Ignacio Rios Jr.
  This topic has been moved.
This topic has been moved.

Unknown Crystal Cluster Attachments

by Krisha Willis
  This topic has been moved.
This topic has been moved.

Some rocks or minerals with human DNA and certain types which correspond to distinct body parts.

by Jeremy Marsh
  This topic has been moved.

Nomenclature of the gadolinite supergroup

by Marco E. Ciriotti
4 02/27/2018 07:52PM
Last Post by Fred E. Davis

Structural analysis of twins in feldspars. I. Carlsbad twinning

by Marco E. Ciriotti
1 02/25/2018 01:56PM
Last Post by Marco E. Ciriotti
This topic has been moved.

MORPHOLOGY OF MINERALS

by Gideon Gobti Ayeah
  This topic has been moved.
This topic has been moved.

minerals crystallizing in the tetrahedral habit

by john watson
  This topic has been moved.



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