α-Brass
Valid as an unnamed mineral
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About α-Brass
Formula:
Cu3Zn
Colour:
yellow
Lustre:
Metallic
Crystal System:
Isometric
Name:
According to compositional similarity with technical brass - widespread zinc-copper alloy.
Copper-zinc intermetallide with composition very close to Cu3Zn (33.3 mas.% of Zn). Compare with zincian copper.
α-Brass is slightly harder than copper, but not as hard as bronze.
Compare zhanghengite and danbaite.
α-Brass is slightly harder than copper, but not as hard as bronze.
Compare zhanghengite and danbaite.
Unique Identifiers
Mindat ID:
6830
Long-form identifier:
mindat:1:1:6830:3
GUID
(UUID V4):
(UUID V4):
ca292aaa-9bdf-4a89-829a-db67171eef42
IMA Classification of α-Brass
IMA status notes:
Unnamed (probably valid)
Approval history:
Unnamed, but probably valid.
Classification of α-Brass
1.AB.10a
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
B : Zinc-brass family
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
B : Zinc-brass family
Pronunciation of α-Brass
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of α-Brass
Metallic
Transparency:
Opaque
Colour:
yellow
Streak:
golden-yellow
Tenacity:
Malleable
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Optical Data of α-Brass
Type:
Isotropic
Chemistry of α-Brass
Mindat Formula:
Cu3Zn
Elements listed:
Crystallography of α-Brass
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Synonyms of α-Brass
Other Language Names for α-Brass
Common Associates
Related Minerals - Strunz-mindat Grouping
1.AB. | Magnesium | Mg |
1.AB.05 | Cadmium | Cd |
1.AB.05 | Rhenium | Re |
1.AB.05 | Zinc | Zn |
1.AB.05 | Titanium | Ti |
1.AB.10b | Danbaite | CuZn2 |
1.AB.10a | Zhanghengite | CuZn |
1.AB.10b | Tongxinite | Cu2Zn |
1.AB.10a | Zinccopperite | Cu7Zn4 (?) |
1.AB.10 | UM2003-03-E:AgAuCuZn | (Cu,Au,Ag)4Zn |
1.AB.10 | UM1980-01-E:CuZn | Cu3Zn |
1.AB.10 | UM1980-02-E:CuZn | Cu4.45Zn |
Other Information
Magnetism:
Paramagnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for α-Brass
mindat.org URL:
https://www.mindat.org/min-6830.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for α-Brass
Localities for α-Brass
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Atlantic Ocean | |
| Sharkov et al. (2007) |
| Marine Geology 161 (1999) |
Austria | |
| Grachev (Ed) +1 other reference |
Belarus | |
| Levitskiy et al. (2018, July) |
Chile | |
| Am Min 55:5-6 pp 1019-1021 |
China | |
| Li et al. (1989) |
Egypt | |
| Fawzy et al. (2021) |
Finland | |
| Knauf et al. (1-2) |
Germany | |
| Belendorff (2021) |
Japan | |
| - (Alleged in field trip guide notes.) |
| Nishida (1994) |
| Petrov (n.d.) |
Russia | |
| Kepezhinskas et al. (2023) |
| www.igem.ru (2001) |
| |
| [AmMin 85:1845] |
| www.igem.ru (2001) |
Feklichev et al. (1998) | |
| Ivanyuk et al. (2018) |
| M.I. Novgorodova analytical data |
| Kalinina (2015) |
| V.V. Seredin data |
| Pavel.M. Kartashov (n.d.) |
Ukraine | |
| Gurov et al. (2013) |
The Moon | |
| Mokhov A.V. and Kartashov P.M. data |
Miyake Island, Miyake Subprefecture, Tokyo Metropolis, Japan