IMA - CNMNC

News about the CNMNC and/or updated items on the CNMNC web site

20 February 2023
Updated IMA-CNMNC lists of valid and invalid unnamed minerals, prepared by Jeffrey de Fourestier, Marco E. Ciriotti and Yang Zhuming, were loaded on the website. Go to the IMA lists of unnamed minerals page

10 January 2023
An up-date (January 2023) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page
3 November 2022
An up-date (November 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

14 September 2022
An up-date (September 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 July 2022
An up-date (July 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

2 May 2022
An up-date (May 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

2 March 2022
An up-date (March 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

5 January 2022
An up-date (January 2022) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

3 November 2021
An up-date (November 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 September 2021
An up-date (September 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

6 July 2021
IMA–CNMNC approved mineral symbols. This publication can be viewed on the New minerals recently approved by the IMA-CNMNC page of the web site

1 July 2021
An up-date (July 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

4 May 2021
An up-date (May 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 March 2021
An up-date (March 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 January 2021
An up-date (January 2021) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 November 2020
An up-date (November 2020) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 September 2020
An up-date (September 2020) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

1 July 2020
An up-date (July 2020) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

4 March 2020
An up-date (March 2020) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

29 January 2020
An approved report on the application of the IMA-CNMNC dominant-valency rule to complex mineral compositions. This publication can be viewed on the IMA reports page of the web site (PDF Format).

11 January 2020
An up-date (January 2020) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

23 November 2019
An up-date (November 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

11 September 2019
An up-date (September 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

11 July 2019
An up-date (July 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

9 June 2019
An up-date (May 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

15 March 2019
An up-date (March 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

14 January 2019
An up-date (January 2019) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

12 November 2018
An up-date (November 2018) to the IMA list of minerals, prepared by Professor Marco Pasero, has been loaded on the website. Go to the IMA list of minerals page

01 October 2018
A revised checklist for new-mineral proposals was uploaded. Go to the ”A new mineral?” page.
19 May 2017
An approved report on the nomenclature of the perovskite supergroup. This publication can be viewed on the IMA reports page of the web site (PDF Format).

20 July 2015
An approved report on the nomenclature of the tobermorite supergroup.This publication can be viewed on the IMA reports page of the web site (PDF Format).
11 May 2015
An approved report on the nomenclature on barylite polytypes. This publication can be viewed on the IMA reports page of the web site (PDF Format).
17 February 2015
An approved report on the nomenclature of the mayenitesupergroup.This publication can be viewed on the IMA reportspage of the web site (PDF Format).
29 January 2015
An approved report on the nomenclature of the dumortierite supergroup: holtite and dumortierite groups This publication can be viewed on the IMA reports page of the web site (PDF Format).
3 December 2013
Dr Chris Stanley (Natural History Museum, London) has up-dated the Quantitative Data File for reflectance values of minerals (November 2013). The file can be downloaded can now be downloaded using the link Quantitative Data File.

He has put together an easily searchable compilation of the COM wavelengths which he is distributing for free.

There are four sheets in the Excel database. Sheet 1 is the principle searchable database with more than 1000 datasets.Column A is a hyperlink to Mindat. Columns B,C,D,E,F will be hyperlinks to images in a later edition. Columns G,H,I,J are the COM data (basically you can take your data for unknown mineral at 546 nm, then using the other wavelengths to narrow down your search). Column K is the mineral name (conforming to IMA nomenclature). Column L is the chemical formula (mostly using the latest IMA list). Column M is the reference. Sheet 2 is an explanation of how to use the database. Sheet 3 is a listing of soon to be published minerals and some missing datasets. Sheet 4 is the same as for sheet 1 but in alphabetical order.
12 April 2013
The program AMPH 2012, which gives the correct name to amphibole compositions after the IMA report (Hawthorne et al. (2012) American Mineralogist, 97, 2031-2048) can now be downloaded at http://www_crystal.unipv.it/labcris/AMPH2012.zip
2 April 2013
An approved report on the nomenclature of the garnet supergroup
This publication can be viewed on the IMA reports page of the web site (PDF Format)
18 February 2013
An approved report on the use of suffixes and prefixes in mineral nomenclature
An approved report on clarification of status of species in the pyrochlore supergroup
These publications can be viewed on the IMA reports page of the web site (PDF Format)
21 November 2012
An approved report on the nomenclature of the hydrotalcite supergroup
An approved report on the nomenclature of the amphibole supergroup
These publications can be viewed on the IMA reports page of the web site (PDF Format).
19 October 2012
List of unnamed minerals
Jeffrey de Fourestier (fu_xiaotu@yahoo.ca) has assumed the role of looking after updates to the list of unnamed minerals