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Waiau, Coromandel peninsula, Thames-Coromandel District, Waikato Region, North Island, New Zealandi
Regional Level Types
Waiau- not defined -
Coromandel peninsulaPeninsula
Thames-Coromandel DistrictDistrict
Waikato RegionRegion
North Island- not defined -
New ZealandCountry

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Key
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Latitude & Longitude (WGS84): 36° 48' 56'' South , 175° 32' 27'' East
Latitude & Longitude (decimal): -36.81569,175.54098
GeoHash:G#: rckyd9cj1
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Coromandel1,502 (2014)7.3km
Whitianga3,367 (2011)14.3km
Tairua1,588 (2011)35.4km
Thames7,136 (2014)35.9km
Pauanui749 (2011)36.6km


This section denotes the Waiau River valley, some 5-10 kilometres south of Coromandel. The river is bordered by the 309 Road which crosses to the eastern side of the peninsula.

Areas along the river are known for tan/cream agate, while stibnite specimens are seen from Waingaro Stream, a remote area to the north-east of Castle Rock. Small Pb-Zn lodes are noted from Petote Creek between the Waiau and Coromandel, but not enough information was found to list.

Gold mining occurred on the Matawai Stream a side tributary on the lower reaches of the Waiau River, with the prominent Castle Rock at the head of the stream. The discovery of gold in 1869 here is credited to a party of prospectors consisting of William Mathie, Thomas Cull, W.B. Healey, R.F. Girdis, and George Cornish, who were given a reward claim. Alluvial gold was found in small quantities by German Fred and William Evans separately about eight years before. The Matawai Stream is bordered by red gravel which in the early days contained coarse gold. The area is not easily accessible today.

Several quartz mines were established in the Matawai Valley, with intermittent operations. Despite the occasional upper level specimen stone find promoted in the media, the area really never took off. There was a spurt of activity in 1881 with the Matawai, Matawai No. 2, Vizard, Vaughan, and Mariebel, as the main mines, but gold discovered was patchy. The Matawai Mine was the largest and will be listed separately, later developed between 1896 to 1903 as the Progress-Castle Rock Mine.

Tiki was an area at the base of the ranges bordering the Waiau River, and never passed the prospecting stage. Tiki, Matawai, and Castle Rock have been used by some references interchangeably for the entire area.

Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

11 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Collection of RJ Martin
Calcite
Formula: CaCO3
Reference: Collection of RJ Martin
Chalcopyrite
Formula: CuFeS2
Reference: Christie, A.B., Mauk, J.L., Simpson, M.P., Brathwaite, R.L., Simmons, S.F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102:5, 785-816.
'Electrum'
Formula: (Au, Ag)
Reference: Christie, A.B., Mauk, J.L., Simpson, M.P., Brathwaite, R.L., Simmons, S.F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102:5, 785-816.
Galena
Formula: PbS
Gold
Formula: Au
Reference: Daily Southern Cross newspaper (1869) Coromandel. The Matawai Gold Discovery, Vol. XXV, issue 384, 16 December 1869.
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Quartz var: Agate
Reference: Judy Rowe Collection
Scorodite
Formula: Fe3+AsO4 · 2H2O
Reference: Collection of RJ Martin
Sphalerite
Formula: ZnS
Reference: Christie, A.B., Mauk, J.L., Simpson, M.P., Brathwaite, R.L., Simmons, S.F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102:5, 785-816.
'Stibiconite'
Formula: Sb3+Sb5+2O6(OH)
Reference: Collection of RJ Martin
Stibnite
Formula: Sb2S3
Valentinite
Formula: Sb2O3
Reference: Collection of RJ Martin

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au, Ag)
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Stibnite2.DB.05Sb2S3
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
'Stibiconite'4.DH.20Sb3+Sb5+2O6(OH)
Valentinite4.CB.55Sb2O3
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Scorodite8.CD.10Fe3+AsO4 · 2H2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Valentinite4.3.11.1Sb2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Scorodite40.4.1.3Fe3+AsO4 · 2H2O
Group 44 - ANTIMONATES
A2X2O6(O,OH,F)
'Stibiconite'44.1.1.1Sb3+Sb5+2O6(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Electrum'-(Au, Ag)
Quartz
var: Agate
-SiO2

List of minerals for each chemical element

HHydrogen
H StibiconiteSb3+Sb25+O6(OH)
H ScoroditeFe3+AsO4 · 2H2O
CCarbon
C CalciteCaCO3
OOxygen
O StibiconiteSb3+Sb25+O6(OH)
O QuartzSiO2
O CalciteCaCO3
O ValentiniteSb2O3
O ScoroditeFe3+AsO4 · 2H2O
SiSilicon
Si QuartzSiO2
SSulfur
S StibniteSb2S3
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
S ChalcopyriteCuFeS2
S ArsenopyriteFeAsS
CaCalcium
Ca CalciteCaCO3
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe ArsenopyriteFeAsS
Fe ScoroditeFe3+AsO4 · 2H2O
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As ScoroditeFe3+AsO4 · 2H2O
AgSilver
Ag Electrum(Au, Ag)
SbAntimony
Sb StibiconiteSb3+Sb25+O6(OH)
Sb StibniteSb2S3
Sb ValentiniteSb2O3
AuGold
Au GoldAu
Au Electrum(Au, Ag)
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary
0 - 2.588 Ma



ID: 3187411
Cenozoic volcanic rocks

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Ignimbrite(s); felsic volcanic rocks; rhyolite

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Cretaceous - Jurassic
66 - 201.3 Ma



ID: 1310312
Manaia Hill Group

Age: Mesozoic (66 - 201.3 Ma)

Stratigraphic Name: Manaia Hill Group

Description: Sandstone, siltstone and conglomerate.

Comments: Eastern Province (Waipapa Composite Terrane) Rocks

Lithology: Sandstone, siltstone, conglomerate

Reference: Edbrooke, S.W., Heron, D.W., Forsyth, P.J., Jongens, R. (compilers). Geology Map of New Zealand 1:1 000 000. GNS Science Geological Map 2. [12]

Berriasian - Oxfordian
139.8 - 163.5 Ma



ID: 1364868
Manaia Hill Group sandstone and siltstone (Waipapa Composite Terrane)

Age: Mesozoic (139.8 - 163.5 Ma)

Stratigraphic Name: Te Mata Subgroup

Description: Interbedded feldspar-lithic volcanic sandstone, siltstone and mudstone/argillite, with minor conglomerate and coarse sandstone.

Comments: Basement (Eastern Province) sedimentary rocks. Age based on absolute age calculated from stratigraphic age range

Lithology: Major:: {sandstone},Minor:: {siltstone, argillite, conglomerate}

Reference: Heron, D.W. . Geology Map of New Zealand 1:250 000. GNS Science Geological Map 1. [13]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

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