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At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide
IMA status
Definition
The International Mineralogy Association (IMA) maintains a
public listing of all the approved mineral names for all minerals since 1959
where official determinations are on record. The official designations are
(A) for approval , (D) for discreditation and/or (R) for redefinition. Mineral
names missing from this list are those species that were grandfathered as being
valid prior to 1959.
This entry in the mineralogy
database denotes the IMA status of a mineral name if it is known. This
database is not the last word in determining if a mineral species name has a
valid standing with the IMA. In fact, this database maintains a listing of
some non-IMA approved mineral species names and synonyms for historical
purposes. Any reference to any mineral in this database is in no way an
endorsement of the current IMA status of the mineral name.
The IMA status in this database is as follows:
Approved IMA - The mineral species has been formally accepted
by the IMA as a valid species and published in a peer-reviewed journal.
Not Approved IMA - The mineral species has not been accepted
by the IMA as a valid species.
Valid Species (Pre-IMA) - The mineral species is considered
valid but was published before 1959, the date the IMA started to approve
mineral species. The minerals classified as such (e.g., gold, galena, etc.)
would probably rate IMA approval (but not always) if submitted today. All
minerals considered valid prior to 1959 were grandfathered as such.
Approved IMA (Dana # Added) - Mineral species approved by the
IMA after the inclusion in the 1997 edition of Dana's New Mineralogy.
Discredited IMA - Mineral species that are currently
considered valid but were formally discredited because of: 1. Prior publication (where the prior publication has priority of the
mineral name). 2. Later work on the holotype specimen found that species status
is questionable. The reason for the discreditation is always given.
Proposed IMA - Unnamed mineral species known only by the year
and vote number (eg. IMA2001-043). The species is unnamed until formal
publication of the mineral species data in a peer-reviewed journal.
Occasionally, the mineral name is not kept secret prior to publication and
leaks out. Hubite is a recent example of a new species name known before
publication and even before the IMA vote. Proposed minerals are given a
tentative Dana classification number which is subject to change once the
mineral is published.
Other Information on the IMA
Here is the link to the Commission on New Minerals and Mineral Names
(CNMMN) of the International Mineralogical Association (IMA). The "approved"
list of mineral names has been approved by the CNMMN during its meeting in Edinburgh (September 2002) and
is posted at the website. This list has been derived from the Materials
Data, Inc. MINERAL Database.
Search the Mineralogy Database
Example Subject Searches
Example:"approved ima" finds all minerals that are known to be approved by the
IMA.
Example: "not approved ima" finds all minerals that are
known to not have been approved by the IMA.
Example: "discredited ima" finds all formerly valid mineral
species that have been discredited by the IMA.
Example: "proposed ima" finds all proposed minerals
submitted to the IMA where formal publication is needed.
Example:"valid species, lacks ima approval" finds all minerals that
were grandfathered prior to 1959.
