Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Terceira Island, Azores, Portugal


mindat Locality ID: 154535
mindat URL: http://www.mindat.org/loc-154535.html

Tectonic Settings:

Total number of sublocalities beneath "Terceira Island, Azores, Portugal": 10
Total number of bottom-level sublocalities: 5

Number of Child Localities: 2
Child Localities:
Angra Do Heroísmo
Praia Da Vitória

Latitude: 38°42'29"N
Longitude: 27°13'34"W
Decimal Degree (lat, lon): 38.708055555556,-27.226111111111
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al C Ca Fe H K Mg Na O S Si Ti Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleCorundumNoneOlivinePyroxeneQuartzSapphirineSpinelSulphur

12 IMA Minerals at location:
Aegirine-augite  (*)Aenigmatite  (*)Dalyite  (*)Fayalite  (*)Ferro-edenite  (*)
Graphite  (*)Hematite  (*)Ilmenite  (*)Katophorite  (*)Magnetite  (*)
Quartz  (*)Sulphur  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine-augite  (*)Pyroxene(Ca,Na)(Fe3+,Mg,Fe2+)Si2O6198113286
Aenigmatite  (*)SapphirineNa4[Fe2+10Ti2]O4[Si12O36]198113133
Dalyite  (*)NoneK2ZrSi6O1519811315
Fayalite  (*)OlivineFe2+2(SiO4)198113371
Ferro-edenite  (*)AmphiboleNaCa2Fe2+5(Si7Al)O22(OH)219811357
Graphite  (*)NoneC1981162812
Hematite  (*)CorundumFe2O319811814640
Ilmenite  (*)CorundumFe2+Ti4+O31981135433
Katophorite  (*)AmphiboleNa(NaCa)(Mg4Al)(Si7Al)O22(OH)219811346
Magnetite  (*)SpinelFe2+Fe3+2O419811314899
Quartz  (*)QuartzSiO219811361156
Sulphur  (*)SulphurS1981212045


No ages have been assigned to this locality yet.
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All locality data graciously provided by mindat.org

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