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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

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
This topic has been moved.

1890 Minerals from Jeweler labled "Carbon" but they shine like Diamonds Attachments

by robert burns
  This topic has been moved.

Monoclinic Britholite-Ce

by Reiner Mielke
4 12/12/2018 02:06PM
Last Post by Uwe Kolitsch

Structure refinement and thermal stability studies of andersonite

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

Structural variations along the apatite F-OH join

by Marco E. Ciriotti
1 12/12/2018 12:16PM
Last Post by Marco E. Ciriotti

Crystal structure of kristiansenite from Szklarska Poręba, Southwestern Poland

by Marco E. Ciriotti
1 12/11/2018 01:07PM
Last Post by Marco E. Ciriotti

Crystal chemistry of poppiite from the Komatsu mine, Saitama Prefecture, Japan

by Marco E. Ciriotti
1 12/11/2018 02:06AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Quartz - Expand my knowledge Attachments

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

Is this a fossil? Attachments

by Caleb Crotinger
  This topic has been moved.
This topic has been moved.

Could this be platinum. Attachments

by Noah Yuen
  This topic has been moved.
This topic has been moved.

Spar or simply Calcite? Attachments

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

Can anyone tell me wth this is Attachments

by Noah Yuen
  This topic has been moved.
This topic has been moved.

Regarding Phosphophyllite Attachments

by Edward Lindy
  This topic has been moved.

A calorimetric and thermodynamic investigation of the synthetic analogue of mandarinoite, Fe2(SeO3)3·5H2O

by Uwe Kolitsch
7 12/05/2018 06:45PM
Last Post by Uwe Kolitsch

Mineralogy, crystallography and structural complexity of natural uranyl silicates

by Marco E. Ciriotti
7 11/28/2018 07:41PM
Last Post by W. Richard Gunter

Site-selective As–P substitution and hydrogen bonding in the crystal structure of philipsburgite

by Marco E. Ciriotti
1 11/24/2018 04:52PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Possible Eclarite Discovery Attachments

by Forest Clark
  This topic has been moved.

Allantoin, C4H6N4O3, in Kahf Kharrat Najem Cave

by Uwe Kolitsch
4 11/20/2018 02:41AM
Last Post by Doug Daniels

Crystal Structure of Thallium-Bearing Chovanite, TlPb26(Sb,As)31S72O, from the Monte Arsiccio Mine, Apuan Alps

by Marco E. Ciriotti
1 11/19/2018 12:10PM
Last Post by Marco E. Ciriotti
This topic has been moved.

Help please Attachments

by Logan Miller
  This topic has been moved.

Site occupancy of Fe2+, Fe3+ and Ti4+ in "titanomagnetite" determined by valence‐difference contrast synchrotron X‐ray

by Marco E. Ciriotti
1 11/10/2018 01:15PM
Last Post by Marco E. Ciriotti

A reinvestigation of holotype wadalite

by Marco E. Ciriotti
1 11/09/2018 08:18PM
Last Post by Marco E. Ciriotti

Structural and chemical study of weishanite

by Marco E. Ciriotti
1 11/09/2018 08:15PM
Last Post by Marco E. Ciriotti

Long-range and short-range cation order in the crystal structures of carlfrancisite and mcgovernite

by Marco E. Ciriotti
1 11/09/2018 08:13PM
Last Post by Marco E. Ciriotti

Secondary Zn-bearing phosphate minerals associated with alteration of phosphophyllite at Hagendorf-Süd, Bavaria

by Marco E. Ciriotti
1 11/08/2018 01:06AM
Last Post by Marco E. Ciriotti

Twinning in chalcostibite revisited

by Marco E. Ciriotti
1 11/08/2018 01:05AM
Last Post by Marco E. Ciriotti

Gortdrumite from Leogang, Salzburg, Austria: Crystal structure and revision of the chemical formula

by Marco E. Ciriotti
2 10/26/2018 10:24AM
Last Post by Ronnie Van Dommelen

The crystal-chemistry of riebeckite

by Marco E. Ciriotti
1 10/26/2018 09:09AM
Last Post by Marco E. Ciriotti

Oxy-dravite from Wołowa Góra Mt., Poland: Crystallochemical and structural studies

by Marco E. Ciriotti
1 10/26/2018 08:51AM
Last Post by Marco E. Ciriotti

Chemographic exploration of the hyalotekite structure-type

by Marco E. Ciriotti
1 10/26/2018 08:19AM
Last Post by Marco E. Ciriotti

Association of uranyl-oxide hydroxy-hydrates and “calciolepersonnite” from the Krátka Dolina Valley (Slovakia)

by Marco E. Ciriotti
1 10/24/2018 09:47AM
Last Post by Marco E. Ciriotti

Embreyite: structure determination, chemical formula

by Marco E. Ciriotti
2 10/18/2018 06:50PM
Last Post by Ronnie Van Dommelen

Crystal chemistry of rathite based on new electron-microprobe data and single-crystal structure refinements

by Marco E. Ciriotti
1 10/18/2018 01:57PM
Last Post by Marco E. Ciriotti

Jinshajiangite: structure, twinning and pseudo­symmetry

by Marco E. Ciriotti
3 10/18/2018 12:56PM
Last Post by Uwe Kolitsch

Re-investigation of shkatulkalite

by Marco E. Ciriotti
2 10/18/2018 10:19AM
Last Post by Ronnie Van Dommelen

Crystal structure of hanksite

by Marco E. Ciriotti
2 10/18/2018 09:54AM
Last Post by Ronnie Van Dommelen

Crystal chemistry of julgoldite, a mineral series of the pumpellyite group: Re-investigation of Fe distribution and hydrogen-bonding

by Marco E. Ciriotti
1 10/17/2018 07:18PM
Last Post by Marco E. Ciriotti

Structure refinements of coquimbite and paracoquimbite from the Hongshan Cu-Au deposit, NW China

by Marco E. Ciriotti
1 10/17/2018 07:09PM
Last Post by Marco E. Ciriotti

New data on cafarsite: reinvestigation of its crystal structure and chemical composition

by Marco E. Ciriotti
1 10/17/2018 07:08PM
Last Post by Marco E. Ciriotti

Non-stoichiometry and local order in minerals with the rockbridgeite structure

by Marco E. Ciriotti
1 10/17/2018 07:04PM
Last Post by Marco E. Ciriotti

Compositional and textural variations in hainite-(Y) and batievaite-(Y) from the Sakharjok Massif (Russia)

by Marco E. Ciriotti
1 10/17/2018 08:30AM
Last Post by Marco E. Ciriotti
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 07:26PM
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 04:56AM
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 04:49AM
Last Post by Marco E. Ciriotti

Calciobritholite

by Reiner Mielke
24 09/24/2018 10:33PM
Last Post by Reiner Mielke

Euphoralite Attachments

by Kathryn Horkley
3 09/24/2018 12:20AM
Last Post by Paul Brandes

Crystal chemistry of schoonerite-group minerals

by Marco E. Ciriotti
2 09/20/2018 11:59AM
Last Post by Luís Martins

Pectolite, murakamiite, schizolite, serandite and tanohataite relationship

by Marco E. Ciriotti
1 09/20/2018 10:47AM
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 10:44AM
Last Post by Marco E. Ciriotti

Incorporation of Co in the rosasite–malachite carbonate group

by Marco E. Ciriotti
1 09/20/2018 10:43AM
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 05:45PM
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 05:43PM
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 01:41PM
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 04:45PM
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 07:52PM
Last Post by Uwe Kolitsch

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

by Marco E. Ciriotti
3 08/10/2018 10:22AM
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 09:45AM
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 09:43AM
Last Post by Marco E. Ciriotti

Kurchatovite and clinokurchatovite: Example of modular polymorphism

by Marco E. Ciriotti
1 08/03/2018 09:06AM
Last Post by Marco E. Ciriotti
This topic has been moved.

Brochantite from Zambia Attachments

by Hans-Jürgen Haas
  This topic has been moved.

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

by Marco E. Ciriotti
1 07/17/2018 05:03PM
Last Post by Marco E. Ciriotti

Edgarite: solution of the crystal structure

by Marco E. Ciriotti
1 07/17/2018 05:01PM
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 02:56PM
Last Post by Luís Martins



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