Camoola Reef (Camoola Mine), Paeroa, Hauraki District, Waikato Region, New Zealandi
Regional Level Types | |
---|---|
Camoola Reef (Camoola Mine) | Reef |
Paeroa | - not defined - |
Hauraki District | District |
Waikato Region | Region |
New Zealand | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
37° 16' 59'' South , 175° 45' 59'' East
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Waihi | 4,619 (2011) | 12.6km |
Paeroa | 3,994 (2011) | 12.8km |
Whangamata | 4,253 (2011) | 12.8km |
Waihi Beach | 2,014 (2011) | 19.6km |
Kerepehi | 537 (2011) | 20.7km |
Mindat Locality ID:
15358
Long-form identifier:
mindat:1:2:15358:1
GUID (UUID V4):
12dbe106-c2ac-46d5-bcea-5c343aedf4dc
Silver-gold.
The vein is 915 metres long, dips 65 degrees west, averages 6.1 metres wide.
There are three distinct lenses, with three levels of workings. Each lense is about 12 metres wide, narrows north and south, and tapers at depth. The lenses are described as cavernous quartzose replacement after calcite, with bands of massive quartz and sheets of silicified propylite, stained in the upper levels with iron and manganese oxides . The northern lense is linked to the central lense by vein material, although displaced by two south dipping reverse faults. The central lense is linked to the southern lense by a shear zone, displaced by four reverse faults. Each lense contains similar geology.
The ore is mainly disseminated in irregular sheets of carbonate, or occur as thin bands in this material. Most veins in the lenses are un-mineralised.
Strong mineralisation occurred in a fan shaped section of the reef, containing galena, sphalerite, chalcopyrite, pyrite, aguilarite, electrum, native silver as the primary ore minerals. Some free gold is found in the upper oxidised areas of the reef in carbonate gangue. There is little secondary mineralisation. Ore mineralisation occurs as patches and very fine 'shreds' disseminated through the quartz-carbonate veins. Rhodochrosite and siderite gangue is also noted.
The reef was the third location discovered in the world for the rare sulpho-selenide aguilarite in 1972, although it has since been found in many other places, including six within this region. It occurs as clusters of minute anhedral crystals associated with the other ore minerals mentioned above, in a quartz-carbonate matrix. It rarely exceeds 0.05% volume of the rock
Little was found for the late 19th Century period, but the patchy and low grade nature for most of the reef may have limited development. Along with several other deposits nearby, the site was a focus for the Ohinemuri Gold and Silver Mines Company (1914-1930), however low silver prices forced a cessation of operations. In the late 1970's, the Consolidated Silver Mining Company of New Zealand Limited, or Consilver extracted gold and silver from the Camoola quartz veins.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Acanthite Formula: Ag2S |
β Aguilarite Formula: Ag4SeS References: |
β Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 |
β Calcite Formula: CaCO3 |
β Calcite var. Manganese-bearing Calcite Formula: (Ca,Mn)CO3 |
β Chalcopyrite Formula: CuFeS2 |
β 'Chlorite Group' |
β Dolomite Formula: CaMg(CO3)2 |
β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β Galena Formula: PbS |
β Gold Formula: Au |
β Gold var. Electrum Formula: (Au,Ag) |
β Hessite Formula: Ag2Te |
β 'Heulandite Subgroup' Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
β 'K Feldspar' |
β 'K Feldspar var. Adularia' Formula: KAlSi3O8 |
β 'Manganese Oxides' |
β Marcasite Formula: FeS2 |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
β Muscovite var. Illite Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
β Pyrite Formula: FeS2 |
β Quartz Formula: SiO2 |
β Rhodochrosite Formula: MnCO3 |
β Siderite Formula: FeCO3 |
β Silver Formula: Ag References: |
β Sphalerite Formula: ZnS |
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Gold | 1.AA.05 | Au |
β | var. Electrum | 1.AA.05 | (Au,Ag) |
β | Silver | 1.AA.05 | Ag |
Group 2 - Sulphides and Sulfosalts | |||
β | Acanthite | 2.BA.35 | Ag2S |
β | Aguilarite | 2.BA.55 | Ag4SeS |
β | Hessite | 2.BA.60 | Ag2Te |
β | Sphalerite | 2.CB.05a | ZnS |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Galena | 2.CD.10 | PbS |
β | Pyrite | 2.EB.05a | FeS2 |
β | Marcasite | 2.EB.10a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
β | Calcite var. Manganese-bearing Calcite | 5.AB.05 | (Ca,Mn)CO3 |
β | Rhodochrosite | 5.AB.05 | MnCO3 |
β | Calcite | 5.AB.05 | CaCO3 |
β | Siderite | 5.AB.05 | FeCO3 |
β | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
β | Dolomite | 5.AB.10 | CaMg(CO3)2 |
Group 9 - Silicates | |||
β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β | Muscovite var. Illite | 9.EC.15 | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
β | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
Unclassified | |||
β | 'K Feldspar' | - | |
β | 'Heulandite Subgroup' | - | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] Β· nH2O |
β | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
β | 'Chlorite Group' | - | |
β | 'Manganese Oxides' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
H | β Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
C | Carbon | |
C | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
C | β Calcite | CaCO3 |
C | β Dolomite | CaMg(CO3)2 |
C | β Calcite var. Manganese-bearing Calcite | (Ca,Mn)CO3 |
C | β Rhodochrosite | MnCO3 |
C | β Siderite | FeCO3 |
O | Oxygen | |
O | β K Feldspar var. Adularia | KAlSi3O8 |
O | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
O | β Calcite | CaCO3 |
O | β Dolomite | CaMg(CO3)2 |
O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
O | β Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
O | β Calcite var. Manganese-bearing Calcite | (Ca,Mn)CO3 |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Quartz | SiO2 |
O | β Rhodochrosite | MnCO3 |
O | β Siderite | FeCO3 |
Na | Sodium | |
Na | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
Mg | Magnesium | |
Mg | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Mg | β Dolomite | CaMg(CO3)2 |
Al | Aluminium | |
Al | β K Feldspar var. Adularia | KAlSi3O8 |
Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Al | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
Al | β Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | β K Feldspar var. Adularia | KAlSi3O8 |
Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
Si | β Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Quartz | SiO2 |
S | Sulfur | |
S | β Acanthite | Ag2S |
S | β Aguilarite | Ag4SeS |
S | β Chalcopyrite | CuFeS2 |
S | β Galena | PbS |
S | β Marcasite | FeS2 |
S | β Pyrite | FeS2 |
S | β Sphalerite | ZnS |
K | Potassium | |
K | β K Feldspar var. Adularia | KAlSi3O8 |
K | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
K | β Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Ca | β Calcite | CaCO3 |
Ca | β Dolomite | CaMg(CO3)2 |
Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | β Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
Ca | β Calcite var. Manganese-bearing Calcite | (Ca,Mn)CO3 |
Mn | Manganese | |
Mn | β Calcite var. Manganese-bearing Calcite | (Ca,Mn)CO3 |
Mn | β Rhodochrosite | MnCO3 |
Fe | Iron | |
Fe | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | β Marcasite | FeS2 |
Fe | β Pyrite | FeS2 |
Fe | β Siderite | FeCO3 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
Se | Selenium | |
Se | β Aguilarite | Ag4SeS |
Ag | Silver | |
Ag | β Acanthite | Ag2S |
Ag | β Aguilarite | Ag4SeS |
Ag | β Gold var. Electrum | (Au,Ag) |
Ag | β Hessite | Ag2Te |
Ag | β Silver | Ag |
Te | Tellurium | |
Te | β Hessite | Ag2Te |
Au | Gold | |
Au | β Gold var. Electrum | (Au,Ag) |
Au | β Gold | Au |
Pb | Lead | |
Pb | β Galena | PbS |
Other Regions, Features and Areas containing this locality
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.