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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

wurtzite and the IMA

by Chris Stefano
61 12/01/2016 05:50PM
Last Post by Joshua Chambers

Crystal chemistry of a Ba-dominant analogue of hydrodelhayelite

by Marco E. Ciriotti
1 11/22/2016 04:06PM
Last Post by Marco E. Ciriotti

Classification book/field guide

by Isaac Carman
2 11/16/2016 04:02PM
Last Post by Ed Clopton

Hakite from Příbram, Czech Republic: Compositional variability, crystal structure and the role within the Se - mineralization

by Marco E. Ciriotti
1 11/08/2016 10:14AM
Last Post by Marco E. Ciriotti

Concerning diopside from Merelani Hills, Tanzania

by Timothy Blackwood
6 11/08/2016 02:42AM
Last Post by John A. Jaszczak
This topic has been moved.

Gogunzulla

by Sister Elias Freeman, OSB.Sol
  This topic has been moved.

Order–Disorder character of owyheeite

by Marco E. Ciriotti
2 10/21/2016 11:33AM
Last Post by Chester S. Lemanski, Jr.

Hydrogen bonding and structural complexity in the pseudomalachite, ludjibaite, reichenbachite polymorphs

by Marco E. Ciriotti
2 10/21/2016 11:31AM
Last Post by Chester S. Lemanski, Jr.

I was told this is blue barite from Morocco but I'm skeptical... Attachments

by DL
11 10/17/2016 09:35PM
Last Post by DL

The crystal structure of uytenbogaardtite and its relationships with gold and silver sulfides-selenides

by Marco E. Ciriotti
2 10/15/2016 05:11PM
Last Post by Uwe Kolitsch
This topic has been moved.

Need help with feldspar classification Attachments

by Jobadiah Giles
  This topic has been moved.

Crystal structure of synthetic alunite-type chromates

by Uwe Kolitsch
1 09/19/2016 05:03PM
Last Post by Uwe Kolitsch

"Maufite" discreditation

by Marco E. Ciriotti
1 09/15/2016 11:42AM
Last Post by Marco E. Ciriotti

Crystal structure of bassetite and saléeite

by Marco E. Ciriotti
3 09/11/2016 03:08PM
Last Post by Uwe Kolitsch
This topic has been moved.

Identifying Todorokite from Maine

by Paul Stephen Cyr
  This topic has been moved.
This topic has been moved.

Identification of mineral from microprobe (EDX), historical slag Attachments

by Šárka Dvořáková
  This topic has been moved.

The names hancockite, niigataite and tweddillite reinstated

by Marco E. Ciriotti
9 08/27/2016 11:16PM
Last Post by Andrew Debnam

Crystal structure of gianellaite (new formula)

by Marco E. Ciriotti
1 08/26/2016 10:26AM
Last Post by Marco E. Ciriotti

Crystal structure of hejtmanite, the Mn-analogue of redefined bafertisite

by Marco E. Ciriotti
1 08/26/2016 10:03AM
Last Post by Marco E. Ciriotti

Francisite from Baccu Locci mine

by Joy Desor
2 08/23/2016 03:44PM
Last Post by Uwe Kolitsch

Acanthite psm argentite vs acanthite

by penney file (2)
3 08/19/2016 07:19PM
Last Post by Reiner Mielke
This topic has been moved.

Where to send specimen for testing

by jennifer cindrich
  This topic has been moved.
This topic has been moved.

Identify- calcite and ? Attachments

by jennifer cindrich
  This topic has been moved.

What is the definition of a "type ocation"?

by Sue
7 08/18/2016 01:08AM
Last Post by Doug Daniels

Natural HP CdSe from Zhamanshin Crater, Russia

by Marco E. Ciriotti
1 07/22/2016 12:39AM
Last Post by Marco E. Ciriotti

What is the actual structure of samarskite-(Y)? (incl. comments on samarskite group)

by Uwe Kolitsch
15 07/19/2016 02:14AM
Last Post by Tony Albini

Mineral nomenclature. IMA 2014-A / 2014-C: thénardite and litidionite renamings

by Marco E. Ciriotti
1 07/08/2016 07:47AM
Last Post by Marco E. Ciriotti

Crystal structure of Cr-bearing Mg3BeAl8O16, a new polytype of magnesiotaaffeite-2N′2S

by Marco E. Ciriotti
1 06/30/2016 10:38AM
Last Post by Marco E. Ciriotti

Redetermination of ruizite

by Marco E. Ciriotti
1 06/30/2016 10:38AM
Last Post by Marco E. Ciriotti

Darwin

by Alfredo Petrov
2 06/17/2016 12:56PM
Last Post by Wayne Corwin

Plumbopyrochlore

by William Moats
5 06/17/2016 03:15AM
Last Post by William Moats

A review of the structural architecture of tellurium oxycompounds

by Marco E. Ciriotti
3 06/13/2016 10:19AM
Last Post by Uwe Kolitsch

New data on unit cell and space group of metastudtite, (UO2)O2(H2O)2

by Uwe Kolitsch
2 06/04/2016 06:40PM
Last Post by Łukasz Kruszewski

New slag phases, in part related to minerals

by Uwe Kolitsch
36 06/01/2016 02:41PM
Last Post by Uwe Kolitsch

SXRD and Raman study of synthesized arsenates and vanadates with the descloizite and adelite structure types

by Uwe Kolitsch
2 05/21/2016 05:12PM
Last Post by Łukasz Kruszewski

Dump grown minerals

by Reiner Mielke
43 05/08/2016 04:04PM
Last Post by Łukasz Kruszewski

Current status of Coeruleolactite?

by Vik Vanrusselt
5 05/07/2016 09:00PM
Last Post by Łukasz Kruszewski

Motukoreaite from the Klodawa Salt Dome, Central Poland

by Marco E. Ciriotti
4 05/06/2016 08:03PM
Last Post by Łukasz Kruszewski

The Great Barrier Reef Expedition 1928–29: The crystal structure and occurrence of weddellite

by Marco E. Ciriotti
2 05/06/2016 07:35PM
Last Post by Łukasz Kruszewski

CO3-bearing member of the hydroxylapatite–hydroxylellestadite series

by Marco E. Ciriotti
4 05/06/2016 07:34PM
Last Post by Łukasz Kruszewski
This topic has been moved.

Skeletonized septarian nodule

by cynthia peterson
  This topic has been moved.
This topic has been moved.

I found a brownish mineral that in the light turns yellow. somebody knows? Attachments

by Luiz Skywalker
  This topic has been moved.
This topic has been moved.

Purple mineral and Phosphohedyphane covered by quartz Attachments

by Jiaqi Sun
  This topic has been moved.

Quartz Twinning Dauphine or Brazil law Attachments

by judah conwell
5 04/19/2016 10:22PM
Last Post by judah conwell
This topic has been moved.

Iridescence on Quartz Attachments

by SophiaJoy MB
  This topic has been moved.
This topic has been moved.

Gypsum, variety ? - North Mathiati Deposit - Cyprus Attachments

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

ID Help minerals Cyprus (Natrolite) Attachments

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

ID Help minerals Cyprus (Calcite ?) Attachments

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

ID Help minerals Cyprus (Calcite ?) Attachments

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

ID Help minerals Cyprus (Sulphate) Attachments

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

ID Help minerals Cyprus (Hematite ?) Attachments

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

ID Help minerals Cyprus (Limonite) Attachments

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

ajoite (?) pseudo from the Congo correction

by isaias casanova (2)
  This topic has been moved.
This topic has been moved.

Anyone knows what is this stone? Attachments

by dean2016
  This topic has been moved.

Crystal structure refinement of margarosanite

by Marco E. Ciriotti
1 03/29/2016 12:59PM
Last Post by Marco E. Ciriotti
This topic has been moved.

diferent mineral that we never seen it before Attachments

by Diego Carvalho
  This topic has been moved.

Jordanite–Geocronite Series from the Pollone Mine, Valdicastello Carducci: Occurrence and Crystal Structures

by Marco E. Ciriotti
1 03/14/2016 03:54PM
Last Post by Marco E. Ciriotti

Crystal structure refinements of legrandite, adamite, and paradamite

by Marco E. Ciriotti
2 03/07/2016 12:35PM
Last Post by Uwe Kolitsch

On the origin of »iron-cross« twins of pyrite from Mt. Katarina, Slovenia

by Uwe Kolitsch
2 03/06/2016 11:55PM
Last Post by Dan Costian

Redetermination of brackebuschite crystal structure and formula

by Marco E. Ciriotti
1 03/02/2016 06:39AM
Last Post by Marco E. Ciriotti

Rondorfite-type structure—XPS and UV–vis study

by Uwe Kolitsch
1 02/13/2016 04:19PM
Last Post by Uwe Kolitsch

Jianshuiite; Rietveld refinement

by Marco E. Ciriotti
2 02/04/2016 10:35AM
Last Post by Uwe Kolitsch

Tourmaline vs. Elbaite vs. Schorl

by Jenna Mast
12 01/21/2016 06:46PM
Last Post by Ronald J. Pellar

Grumiplucite from the Rudňany deposit, Slovakia: a second world-occurrence and new data

by Marco E. Ciriotti
2 01/17/2016 07:23PM
Last Post by Uwe Kolitsch
This topic has been moved.

Mangano Calcite

by Chalcedony Ireland
  This topic has been moved.

New structural data reveal benleonardite to be a member of the pearceite-polybasite group

by Marco E. Ciriotti
11 12/29/2015 03:48PM
Last Post by Rob Woodside

Crystal structure of daomanite

by Marco E. Ciriotti
1 12/26/2015 01:47PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Can anyone help me identify this I asked a geologist and he referred me to this site. Attachments

by Benji
  This topic has been moved.
This topic has been moved.

Sicilian sulfur specimens

by Bob Harman
  This topic has been moved.

Hydrothermal alteration of chevkinite-group minerals

by Marco E. Ciriotti
3 11/27/2015 08:59PM
Last Post by Pavel Kartashov

Coupled substitutions in PGE-enriched cobaltite

by Marco E. Ciriotti
1 11/27/2015 12:48PM
Last Post by Marco E. Ciriotti

Crystal structure and chemistry of natural kutinaite

by Marco E. Ciriotti
1 11/27/2015 12:45PM
Last Post by Marco E. Ciriotti

Crystal structure, thermal behaviour and parageneses of koninckite

by Marco E. Ciriotti
1 11/27/2015 12:45PM
Last Post by Marco E. Ciriotti

Chemical composition of lamprophyllite-group minerals and crystal structure of fluorine-rich barytlamprophyllite

by Marco E. Ciriotti
3 11/23/2015 02:49PM
Last Post by Marco E. Ciriotti

Crystallographic analysis of modular structures of cupromakopavonite and heyrovskýite

by Marco E. Ciriotti
1 11/22/2015 01:49PM
Last Post by Marco E. Ciriotti

Crystal structure and genesis of the hydrated analog of rastsvetaevite

by Marco E. Ciriotti
1 11/22/2015 01:30PM
Last Post by Marco E. Ciriotti

Merrillite from the Suizhou meteorite

by Marco E. Ciriotti
1 11/21/2015 06:56AM
Last Post by Marco E. Ciriotti

A Ti-Rich fluoro-richterite from Sandefjord, Norway

by Knut Edvard Larsen
1 11/15/2015 08:57PM
Last Post by Knut Edvard Larsen
This topic has been moved.

Churchville Quarry, MD micros Attachments

by Sam Linton
  This topic has been moved.

Molecular water content in uranyl carbonate mineral andersonite and refined cell data

by Marco E. Ciriotti
1 11/09/2015 06:14PM
Last Post by Marco E. Ciriotti



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