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Maratoto-Wentworth area, Waikato Region, New Zealandi
Regional Level Types
Maratoto-Wentworth areaArea
Waikato RegionRegion
New ZealandCountry

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PhotosMapsSearch
07772180015158536781500.jpg
Quartz

Maratoto-Wentworth area, Waikato Region, New Zealand
02233770015667271905673.jpg
Quartz, etc.

Maratoto-Wentworth area, Waikato Region, New Zealand
07772180015158536781500.jpg
Quartz

Maratoto-Wentworth area, Waikato Region, New Zealand
02233770015667271905673.jpg
Quartz, etc.

Maratoto-Wentworth area, Waikato Region, New Zealand
07772180015158536781500.jpg
Quartz

Maratoto-Wentworth area, Waikato Region, New Zealand
02233770015667271905673.jpg
Quartz, etc.

Maratoto-Wentworth area, Waikato Region, New Zealand
Latitude & Longitude (WGS84):
37° 16' 59'' South , 175° 45' 59'' East
Latitude & Longitude (decimal):
-37.28333,175.76666
GeoHash:
G#: rckgzsv2u
GRN:
S25E101
Type:
Area
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
15426
Long-form identifier:
mindat:1:2:15426:1
GUID (UUID V4):
2898a89d-3f4b-4dbb-844b-313a68994eb3


At the central Maratoto valley prospect, southern Coromandel Peninsula, New Zealand, andesite flows and dacite breccias host rare porphyry-style quartz veins that are telescoped by widespread epithermal veins and alteration.
Early porphyry-style quartz veins, which lack selvages of porphyry-style alteration, host hypersaline fluid inclusions that contain several translucent daughter crystals, including halite and sylvite.
Overprinting epithermal veins and alteration are divided into two stages. Main-stage epithermal alteration and veins are characterised by the successive deposition of pyrite, quartz, and ankerite-dolomite veinlets coupled with intense alteration of the wall rock to quartz, illite, interlayer illite-smectite (<10% smectite), chlorite, pyrite, ankerite, and dolomite. Late-stage epithermal veins and alteration are characterised by the formation of calcite and siderite veinlets, coupled with overprinting of the wall rocks by both these minerals. (Simpson, et al, 2004)

The main veins (and mines) are:
Silver Queen
Camoola
Central Maratoto
Golden Spur
United

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Bromargyrite
Formula: AgBr
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 3 - Halides
ⓘBromargyrite3.AA.15AgBr
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ DolomiteCaMg(CO3)2
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
SSulfur
Sⓘ PyriteFeS2
KPotassium
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ PyriteFeS2
BrBromine
Brⓘ BromargyriteAgBr
AgSilver
Agⓘ BromargyriteAgBr

Other Regions, Features and Areas containing this locality

Australian PlateTectonic Plate
New Zealand

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

www.tandfonline.com (n.d.) http://www.tandfonline.com/doi/pdf/10.1080/00288306.2004.9515036?needAccess=true
citeseerx.ist.psu.edu (n.d.) http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.848.3234&rep=rep1&type=pdf
J.V. Main (1979) Precious metal bearing veins of the Maratoto-Wentworth area, Hauraki Goldfield, New Zealand. New Zealand Journal of Geology and Geophysics, 22:1, 41-51.
Mark P. Simpson , Jeffrey L. Mauk & Ross G. Kendrick (2004) Telescoped porphyry‐style and epithermal veins and alteration at the central Maratoto valley prospect, Hauraki Goldfield, New Zealand. New Zealand Journal of Geology and Geophysics, 47:1, 39-56.
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