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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.

I am Chevkinite. What is your opinion?? Attachments

by Osman Khattak
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Is Picture Jasper really Jasper?

by Robert Darabos
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Please help identify Attachments

by Candace Vialpando
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Help Identifying a "fuzzy" mineral from Namibia Attachments

by Christine Domino (2)
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Nomenclature of the perovskite supergroup

by Marco E. Ciriotti
2 04/13/2017 12:21AM
Last Post by Stuart Mills
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Location for large calcite Attachments

by Casper Voogt
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Garnets in the majorite–pyrope system: symmetry, lattice microstrain, and order–disorder of cations

by Marco E. Ciriotti
1 04/07/2017 09:06AM
Last Post by Marco E. Ciriotti

Coloration of natural zircon

by Uwe Kolitsch
1 04/06/2017 04:41PM
Last Post by Uwe Kolitsch

Refinement of the crystal structure of schneiderhöhnite

by Marco E. Ciriotti
1 04/05/2017 07:35AM
Last Post by Marco E. Ciriotti

Crystal structure of veenite

by Marco E. Ciriotti
2 04/03/2017 04:05PM
Last Post by Uwe Kolitsch

Incommensurately modulated twin structure of nyerereite

by Marco E. Ciriotti
2 04/03/2017 04:05PM
Last Post by Uwe Kolitsch

Crystal structure of mineral fibres: 2. Amosite and fibrous anthophyllite

by Marco E. Ciriotti
1 04/03/2017 10:48AM
Last Post by Marco E. Ciriotti
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In Phoenixville, Pa yesterday here are some minerials I can't figure out. The blue green material is waxy. There was a lot of coal around.

by Eric Yeremian
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Calculation of FeO and Fe2O3 wt% from Fe2O3 value obtained from XRF analysis Attachments

by Ashok Shaw
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Anyone know what this is? Attachments

by Danielle Nicole Stone
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Structure refinement and crystal chemistry of tokkoite and tinaksite from Murun massif (Russia)

by Marco E. Ciriotti
5 03/03/2017 10:15AM
Last Post by Joel Dyer
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Otavite best analysis method

by Jim Robison
  This topic has been moved.
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Citrine Table Appraisal - is it citrine? Attachments

by Thalia Castillo
  This topic has been moved.
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Please help with ID Attachments

by Debbie Forrester
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The Red Emerald

by Seth William Rozendaal
21 02/15/2017 01:00AM
Last Post by Seth William Rozendaal

"Alumosauconite" from Silver Coin, Nevada

by Marco E. Ciriotti
1 02/14/2017 12:50PM
Last Post by Marco E. Ciriotti

IMA 2015-B = astrophyllite supergroup: nomenclature and classification

by Marco E. Ciriotti
1 02/14/2017 11:05AM
Last Post by Marco E. Ciriotti
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Negative crystals and their formation Attachments

by Donn Cuson
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Order of [6]Ti4+ in a Ti-rich calcium amphibole from Kaersut, Greenland

by Marco E. Ciriotti
1 02/09/2017 08:38AM
Last Post by Marco E. Ciriotti
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Millerite Cleavage Angles

by John Collins
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Lazurite is the same mineral as Haüyne ?

by Uwe Ludwig
42 01/30/2017 09:16PM
Last Post by Ralph Bottrill

Modelling of substitutional defects in the structure of Ti-bearing hibonite

by Marco E. Ciriotti
2 01/29/2017 05:34PM
Last Post by Uwe Kolitsch
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Rough Diamond in Kimberlite conglomerate??? Attachments

by Heather Marie Reid
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Si-deficient, OH-substituted, boron-bearing vesuvianite from Sakha-Yakutia

by Marco E. Ciriotti
1 01/20/2017 10:20AM
Last Post by Marco E. Ciriotti

New occurrence of Ni-rich horomanite from the Kouyama gabbro, Japan

by Marco E. Ciriotti
1 01/18/2017 09:31AM
Last Post by Marco E. Ciriotti

Structural refinement of köttigite–parasymplesite solid solution

by Marco E. Ciriotti
1 01/18/2017 09:29AM
Last Post by Marco E. Ciriotti

Cation ordering of {110} and {211} sectors in "grandite" garnet from Mali

by Marco E. Ciriotti
1 01/18/2017 09:28AM
Last Post by Marco E. Ciriotti
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Anyone familiar with druzy quartz conglomerates?

by Dustin Ryan Alexander
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Hydroxycalciopyrochlore from a regionally metamorphic marble at Bližná, Czech Republic

by Marco E. Ciriotti
1 01/11/2017 06:26PM
Last Post by Marco E. Ciriotti

Hydrogen-bonding system in amarillite

by Marco E. Ciriotti
1 01/11/2017 06:24PM
Last Post by Marco E. Ciriotti

Crystal structure and new formula of rameauite

by Marco E. Ciriotti
1 01/11/2017 06:23PM
Last Post by Marco E. Ciriotti

Partzite discreditation

by Marco E. Ciriotti
1 01/11/2017 06:16PM
Last Post by Marco E. Ciriotti

Crystal chemistry of lamprophyllite-related minerals

by Marco E. Ciriotti
1 01/11/2017 06:15PM
Last Post by Marco E. Ciriotti

Hydrogen bond system and vibrational spectroscopy of fibroferrite

by Marco E. Ciriotti
1 01/11/2017 06:14PM
Last Post by Marco E. Ciriotti

Si-deficient, OH-substituted, boron-bearing vesuvianite from Sakha-Yakutia

by Marco E. Ciriotti
1 01/11/2017 05:46PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Distinguishing sedimentary from volcanic rocks

by Isaac Carman
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Revised and expanded structure hierarchy of natural and synthetic hexavalent uranium compounds

by Marco E. Ciriotti
5 01/09/2017 11:23AM
Last Post by Luís Martins

Understanding the crystal chemistry of barium In TS-block minerals

by Marco E. Ciriotti
1 01/05/2017 09:42AM
Last Post by Marco E. Ciriotti

Cs-bearing beryl evolving to pezzottaite from the Julianna Pegmatitic System SW Poland

by Marco E. Ciriotti
1 01/05/2017 09:38AM
Last Post by Marco E. Ciriotti

Crystal structure of nickelskutterudite (with revised formula)

by Marco E. Ciriotti
1 01/05/2017 09:34AM
Last Post by Marco E. Ciriotti

Structure refinement and vibrational spectroscopy of vauxite from type-locality

by Marco E. Ciriotti
1 01/05/2017 09:33AM
Last Post by Marco E. Ciriotti

Revision of the crystal structure and formula of bafertisite

by Marco E. Ciriotti
1 01/05/2017 09:31AM
Last Post by Marco E. Ciriotti

New data for chiavennite and ferrochiavennite

by Marco E. Ciriotti
1 01/05/2017 09:30AM
Last Post by Marco E. Ciriotti
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Dushan Jade

by Anonymous User
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Classification book/field guide

by Isaac Carman
26 12/28/2016 09:05PM
Last Post by Ralph Bottrill
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Is this translucent stone cryptocrytallin red chert. With manganese

by Michael Harwell
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Concerning diopside from Merelani Hills, Tanzania

by Timothy Blackwood
8 12/25/2016 12:37AM
Last Post by Ralph Bottrill
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Help ID #2 Attachments

by Frank Festa
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Help ID #1 Attachments

by Frank Festa
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Blue mineral What is it? Attachments

by Nancy Gerlach
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Unobtainium defined Attachments

by Reiner Mielke
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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

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
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 12:33PM
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 12:31PM
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 10:35PM
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 06:11PM
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 06:03PM
Last Post by Uwe Kolitsch

"Maufite" discreditation

by Marco E. Ciriotti
1 09/15/2016 12:42PM
Last Post by Marco E. Ciriotti

Crystal structure of bassetite and saléeite

by Marco E. Ciriotti
3 09/11/2016 04:08PM
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 08/28/2016 12:16AM
Last Post by Andrew Debnam

Crystal structure of gianellaite (new formula)

by Marco E. Ciriotti
1 08/26/2016 11:26AM
Last Post by Marco E. Ciriotti

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

by Marco E. Ciriotti
1 08/26/2016 11:03AM
Last Post by Marco E. Ciriotti

Francisite from Baccu Locci mine

by Joy Desor
2 08/23/2016 04:44PM
Last Post by Uwe Kolitsch

Acanthite psm argentite vs acanthite

by penney file (2)
3 08/19/2016 08:19PM
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 02:08AM
Last Post by Doug Daniels

Natural HP CdSe from Zhamanshin Crater, Russia

by Marco E. Ciriotti
1 07/22/2016 01:39AM
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 03:14AM
Last Post by Tony Albini



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