Emery
A rock subtype
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About Emery
Hardness:
9
Name:
Named after the locality where it was discovered: Cape Emeri, Island of Naxos, Greece
A rock - a mixture of granular Corundum (predominant component) and other minerals; usually contains spinel group minerals like hercynite and/or iron oxides, such as magnetite and hematite, and rutile.
Emery is used as a natural abrasive, but is sometimes produced artificially.
Commonly found as a metabauxite originated from karst bauxite associated with to marble ( metamorphosed limestone). Diasporite may for at lower metamorphic grades. These rocks are commonly known as corundites.
It may also form from magmatic segregation (e.g. McNevin 1975), although geological studies (such as those on the classic Cortlandt Complex near Peekskill, New York) show that many deposits once thought to be purely magmatic are actually the result of magma assimilation and contact metamorphism. In these cases, the magma melted and absorbed aluminum-rich sedimentary, rocks (like shale or schist), leading to the crystallization of corundum (Butler, 1936 ).
Emery is used as a natural abrasive, but is sometimes produced artificially.
Commonly found as a metabauxite originated from karst bauxite associated with to marble ( metamorphosed limestone). Diasporite may for at lower metamorphic grades. These rocks are commonly known as corundites.
It may also form from magmatic segregation (e.g. McNevin 1975), although geological studies (such as those on the classic Cortlandt Complex near Peekskill, New York) show that many deposits once thought to be purely magmatic are actually the result of magma assimilation and contact metamorphism. In these cases, the magma melted and absorbed aluminum-rich sedimentary, rocks (like shale or schist), leading to the crystallization of corundum (Butler, 1936 ).
Unique Identifiers
Mindat ID:
9093
Long-form identifier:
mindat:1:1:9093:9
Classification of Emery
Sub-divisions of Emery
- Emery
Mineralogy of Emery
Essential minerals - these are minerals that are required within the classification of this rock:
| Corundum | Al2O3 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Physical Properties of Emery
Hardness:
9 on Mohs scale
Comment:
variable
Synonyms of Emery
Other Language Names for Emery
Internet Links for Emery
mindat.org URL:
https://www.mindat.org/min-9093.html
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References for Emery
Localities for Emery
Showing 46 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Naxos Mine, Drimalia, Naxos Island, Naxos, South Aegean, Greece