Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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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:
Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia

Oldest recorded age at locality: 541
Youngest recorded age at locality: 0.0117

mindat Locality ID: 5885
mindat URL: http://www.mindat.org/loc-5885.html

Tectonic Settings:

Total number of sublocalities beneath "Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia": 0
Total number of bottom-level sublocalities: 0

Latitude: 41°27'"S
Longitude: 145°17'60"E
Decimal Degree (lat, lon): -41.45,145.3

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.

Amorphous	Aragonite	Auricupride	Brucite	Calcite	Chlorite	Clay	Covellite	Digenite	Garnet
Hydrotalcite	Malachite	Millerite	Molybdenite	Nickeline	None	Palygorskite	Pentlandite	Perovskite	Pyrite
Pyroxene	Sepiolite	Serpentine	Smectite-vermiculite	Spinel	Talc	Woodwardite

Andradite ()*	Antigorite ()*	Aragonite ()*	Awaruite ()*	Brucite ()*
Chrysotile ()*	Clinochlore ()*	Cobaltpentlandite ()*	Covellite ()*	Digenite ()*
Diopside ()*	Dypingite ()*	Enstatite ()*	Falcondoite ()*	Gaspéite ()*
Heazlewoodite ()*	Hellyerite ()*	Hydrohonessite ()*	Lizardite ()*	Magnesite ()*
Magnetite ()*	Millerite ()*	Molybdenite ()*	Népouite ()*	Nullaginite ()*
Otwayite ()*	Palygorskite ()*	Pecoraite ()*	Pentlandite ()*	Polydymite ()*
Pyrite ()*	Pyroaurite ()*	Pyrrhotite ()*	Reevesite ()*	Retgersite ()*
Saponite ()*	Stevensite ()*	Talc ()*	Theophrastite ()*	Violarite ()*
Zaratite ()*

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 Co Cu Fe H Mg Mo Na Ni O S Si

Elements from minerals reported directly at this locality: Al C Ca Co Cu Fe H Mg Mo Na Ni O S Si

Structural Groups for minerals in this locality:
Amorphous Aragonite Auricupride Brucite Calcite Chlorite Clay Covellite Digenite Garnet
Hydrotalcite Malachite Millerite Molybdenite Nickeline None Palygorskite Pentlandite Perovskite Pyrite
Pyroxene Sepiolite Serpentine Smectite-vermiculite Spinel Talc Woodwardite

41 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	419.2	358.9	1534
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	419.2	358.9	708
Aragonite ()*	Aragonite	Ca(CO₃)	541	0.0117	3250
Awaruite ()*	Auricupride Perovskite	Ni₃Fe	419.2	358.9	166
Brucite ()*	Brucite	Mg(OH)₂	541	0.0117	462
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	419.2	358.9	951
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	541	0.0117	1756
Cobaltpentlandite ()*	Pentlandite	Co₉S₈	541	0.0117	82
Covellite ()*	Covellite	CuS	541	0.0117	4165
Digenite ()*	Digenite	Cu_1.8S	541	0.0117	1027
Diopside ()*	Pyroxene	CaMgSi₂O₆	541	0.0117	4135
Dypingite ()*	None	Mg₅(CO₃)₄(OH)₂·5H₂O	2.58	0.0117	50
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	541	0.0117	944
Falcondoite ()*	Sepiolite Clay	Ni₄Si₆O₁₅(OH)₂·6H₂O	541	0.0117	4
Gaspéite ()*	Calcite	Ni(CO₃)	541	0.0117	22
Heazlewoodite ()*	None	Ni₃S₂	419.2	358.9	205
Hellyerite ()*	None	Ni(CO₃)·6H₂O	2.58	0.0117	3
Hydrohonessite ()*	Woodwardite Hydrotalcite	(Ni_1-xFe³⁺_x)(SO₄)_x/2(OH)₂·nH₂O (x < 0.5, n > 3x/2)	541	0.0117	12
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	541	0.0117	359
Magnesite ()*	Calcite	Mg(CO₃)	485.4	382.7	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	485.4	382.7	14899
Millerite ()*	Millerite	NiS	541	0.0117	1066
Molybdenite ()*	Molybdenite	MoS₂	541	0.0117	5800
Népouite ()*	Serpentine Clay	Ni₃Si₂O₅(OH)₄	541	0.0117	66
Nullaginite ()*	Malachite	Ni₂(CO₃)(OH)₂	541	0.0117	3
Otwayite ()*	None	Ni₂(CO₃)(OH)₂·H₂O	2.58	0.0117	5
Palygorskite ()*	Palygorskite Clay	(Mg,Al)₂Si₄O₁₀(OH)·4H₂O	541	0.0117	306
Pecoraite ()*	Clay Serpentine	Ni₃Si₂O₅(OH)₄	541	0.0117	40
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	541	0.0117	1512
Polydymite ()*	Spinel	Ni²⁺Ni³⁺₂S₄	541	0.0117	131
Pyrite ()*	Pyrite	FeS₂	541	0.0117	39462
Pyroaurite ()*	Hydrotalcite	Mg₆Fe³⁺₂(CO₃)(OH)₁₆·4H₂O	541	0.0117	89
Pyrrhotite ()*	Nickeline	Fe₇S₈	541	0.0117	9056
Reevesite ()*	Hydrotalcite	Ni₆Fe³⁺₂(CO₃)(OH)₁₆·4H₂O	2.58	0.0117	48
Retgersite ()*	None	Ni(SO₄)·6H₂O	541	0.0117	55
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	541	0.0117	301
Stevensite ()*	Clay	(Ca,Na)_xMg_3-ySi₄O₁₀(OH)₂	541	0.0117	57
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	485.4	382.7	3337
Theophrastite ()*	Brucite	Ni(OH)₂	2.58	0.0117	6
Violarite ()*	Spinel	FeNi₂S₄	541	0.0117	380
Zaratite ()*	Amorphous	Ni₃(CO₃)(OH)₄·4H₂O	2.58	0.0117	56

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_529	Lord Brassey Mine is known for unique nickel mineral assemblages. The Lord Brassey Mine can be divided into four unique stages of mineralization; magmatic, metamorphic, hydrothermal and supergene alteration. The magmatic stage formed minerals such as enstatite, forsterite, anorthite, augite, chromite. Little remains as this assemblage has largely been altered to form new minerals.
Michelle_530	Lord Brassey Mine is known for unique nickel mineral assemblages. The Lord Brassey Mine can be divided into four unique stages of mineralization; magmatic, metamorphic, hydrothermal and supergene alteration. The metamorphic stage is either due to greenschist-facies burial or emplacement related metamorphism. The primary magmatic assemblage has largely transformed to serpentine, chlorite, amphibole, epidote, garnet, and minor prehnite, magnetite, talc, magnesite, opal and chalcedony.
Michelle_531	Lord Brassey Mine is known for unique nickel mineral assemblages. The Lord Brassey Mine can be divided into four unique stages of mineralization; magmatic, metamorphic, hydrothermal and supergene alteration. Hydrothermal alteration occurs later in the Devonian, producing serpentinite and introducing nickel. It is thought that a Devonian granitic intrusion postdates the serpentinite, introducing calcium, talc magnesite veins and possibly molybdenite and veins of diopside.
Michelle_532	Lord Brassey Mine is known for unique nickel mineral assemblages. The Lord Brassey Mine can be divided into four unique stages of mineralization; magmatic, metamorphic, hydrothermal and supergene alteration. Exposure by glaciation and the following rapid erosion allowed new supergene and alteration mineralization.

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID	Age Notes
Michelle_529	541	485.4	Cambrian	Stratigraphy	Magmatic age	Augite	5885	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	Lord Brassey Mine	Anderson et al. (2002)	MR33_321	Age of primary mineralization of igneous host rocks. Little remains of this assemblage due to metamorphism.
Michelle_530	485.4	382.7	Pre-mid-Devonian, possibly Cambrian	Stratigraphy	Metamorphic age	Epidote, Magnesite, Magnetite, Opal, Prehnite, Talc	5885	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	Lord Brassey Mine	Anderson et al. (2002)	MR33_321	Age of metamorphism. Age described as "Pre-mid-Devonian, possibly Cambrian." The metamorphic stage is either due to greenschist-facies burial or emplacement related metamorphism.
Michelle_531	419.2	358.9	Devonian	Stratigraphy	Hydrothermal age	Andradite, Antigorite, Awaruite, Chrysotile, Heazlewoodite	5885	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	Lord Brassey Mine	Anderson et al. (2002)	MR33_321	Age of hydrothermal alteration. Age described as "latest stage of Devonian metamorphism." Hydrothermal alteration occurs later in the Devonian, producing serpentinite and introducing nickel. It is thought that a Devonian granitic intrusion postdates the serpentinite, introducing calcium, talc magnesite veins and possibly molybdenite and veins of diopside.
Michelle_532	2.58	0.0117	Pleistocene	Stratigraphy	Supergene and weathering age	Dypingite, Hellyerite, Otwayite, Reevesite, Theophrastite, Zaratite	5885	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	Lord Brassey Mine	Anderson et al. (2002)	MR33_321	Age of weathering and supergene alteration. Exposure by glaciation and the following rapid erosion allowed the supergene and alteration mineralization.

Sample	Source Locality	Reference URL
R061050	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	https://rruff.info/R061050
R070699	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	https://rruff.info/R070699
R050268	Lord Brassey Mine, Heazlewood District, Waratah-Wynyard Municipality, Tasmania, Australia	https://rruff.info/R050268

All locality data graciously provided by mindat.org

All age data...