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:
Gumeracha, South Mt Lofty Ranges (Adelaide Hills), Mt Lofty Ranges, South Australia, Australia

mindat Locality ID: 251550
mindat URL: http://www.mindat.org/loc-251550.html

Tectonic Settings:

Total number of sublocalities beneath "Gumeracha, South Mt Lofty Ranges (Adelaide Hills), Mt Lofty Ranges, South Australia, Australia": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Chapmans Talc Mine
Dunstan Talc Mine (Gumeracha Talc Mine)
Gumeracha Quarry (Hundred Of Talunga)

Latitude: 34°50'19"S
Longitude: 138°54'41"E
Decimal Degree (lat, lon): -34.838611111111,138.91138888889

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Amphibole	Beryl	Calcite	Clay	Diaspore	Feldspar	Kaolinite	Mica	None	Not in a structural group
Pyrite	Quartz	Rutile	Smectite-vermiculite	Talc

Actinolite ()*	Albite ()*	Beryl ()*	Calcite ()*	Goethite ()*
Kaolinite ()*	Microcline ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*
Quartz ()*	Rutile ()*	Sillimanite ()*	Talc ()*	Vermiculite ()*

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 Be C Ca Fe H K Mg Na O S Si Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Beryl Calcite Clay Diaspore Feldspar Kaolinite Mica None Not in a structural group
Pyrite Quartz Rutile Smectite-vermiculite Talc

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	1	12334	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	3	12332,12333,12334	8803
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1	12334	4286
Calcite ()*	Calcite	Ca(CO₃)	1	12332	27770
Goethite ()*	Diaspore	FeO(OH)	1	12334	7437
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	12334	5591
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	12334	4924
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	2	12333,12334	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	12334	17380
Pyrite ()*	Pyrite	FeS₂	3	12332,12333,12334	39462
Quartz ()*	Quartz	SiO₂	2	12333,12334	61156
Rutile ()*	Rutile	TiO₂	1	12334	5614
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	12334	1516
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	3	12332,12333,12334	3337
Vermiculite ()*	Clay Smectite-vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄·8H₂O	1	12334	652

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...