Zygadite
A variety of Albite
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About Zygadite
Formula:
Na(AlSi3O8)
Name:
Named in 1843 by August Breithaupt from the Greek ζυγαδην = "in pairs" because the mineral is twinned. The crystals exhibit very acute rhombic cross-sections.
First Recorded Locality:
Zygadite variety of albite consists of an unusual crystallographic habit: tabular crystals with a steeply acute morphology.
Unique Identifiers
Mindat ID:
4523 (as Zygadite)
96 (as Albite)
96 (as Albite)
Long-form identifier:
mindat:1:1:4523:6 (as Zygadite)
mindat:1:1:96:9 (as Albite)
mindat:1:1:96:9 (as Albite)
Similar Names
Chemistry of Zygadite
Mindat Formula:
Na(AlSi3O8)
Element Weights:
Elements listed:
First Recorded Occurrence of Zygadite
Common Associates
Associations Based on Photo Data:
| 5 photos of Zygadite associated with Quartz | SiO2 |
| 3 photos of Zygadite associated with 'Cleavelandite' | Na(AlSi3O8) |
| 2 photos of Zygadite associated with Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| 2 photos of Zygadite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| 1 photo of Zygadite associated with Pyrite | FeS2 |
| 1 photo of Zygadite associated with Fluorapatite | Ca5(PO4)3F |
| 1 photo of Zygadite associated with Calcite | CaCO3 |
| 1 photo of Zygadite associated with 'Adularia' | KAlSi3O8 |
Other Information
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 Zygadite
mindat.org URL:
https://www.mindat.org/min-4523.html
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References for Zygadite
Reference List:
Localities for Zygadite
Showing 14 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.
Germany (FRL) | |
| August Breithaupt (1843) |
USA | |
| Diuglas Watts |
| Personally collected and sight ... | |
| King et al. (1994) |
| King et al. (1994) |
| King et al. (1994) |
| King et al. (1994) | |
| Found with quartz crystals in a nice ... +1 other reference | |
| King et al. (1994) |
| King (n.d.) | |
| King et al. (1994) |
| Found during ongoing study of Ryerson ... +1 other reference | |
| King (n.d.) |
Black Mountain Quarry, Rumford, Oxford County, Maine, USA