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Red Island (Karamea), Waimarama, Hastings District, Hawke's Bay Region, New Zealandi
Regional Level Types
Red Island (Karamea)Island
Waimarama- not defined -
Hastings DistrictDistrict
Hawke's Bay RegionRegion
New ZealandCountry

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Latitude & Longitude (WGS84):
39° 51' 29'' South , 176° 59' 18'' East
Latitude & Longitude (decimal):
Locality type:
KΓΆppen climate type:


Stratiform manganese oxide horizons are interbedded between basalt and limestones.

This small island was intensively studied by (Kobe, 1976), is found by walking along the coastline south of Waimarama. It was formed when lava intruded soft seabed calcareous sediments. It is of interest due to its complex geology, containing sedimentary rocks, lavas, zeolites, and manganese horizons. From the base, the rocks units contain the following.

1) Up to 15 metres thick white-grey, bentonitic, partly glaucontitic, calcareous shale or fine sandstone with large calcareous concretions.

2) Up to 4 metre thick pink to dusky red argillaceous limestone and shale, with greenish tuffaceous friable lenses of chlorite, glass shards, and flattened lapilli, with small psilomelane nodules, and dark fine manganiferous matter in rich microfossiliferous beds.

3) Up to 8 metres thick to the east (pinching out to the west) pale olive green lava, with brick red bordering sediments. The lava contains calcite-zeolite filled fractures, and pale orange alteration rims.

4) Up to 10 metres thick greenish black basaltic pillow lava, with black glassy scoriaceous crusts, fractures filled with calcite. Intercalated abundant pink-red calcareous patches.

5) Up to 15 metres thick bluish-green fine grained lava, with white calcite and green chlorite filled veins, an upper dusky red calcareous sediments, and lower brick red, baked, hematitic, and brecciated layer containing psilomelane-pyrolusite nodules.

6) Up to 10 metres thick pink red pillow lava, with baked intercalated calcareous sediments, having pale olive green-grey rusty surfaces, with plagioclase phenocrysts. Fractures are filled with calcite, radiating acicular thomsonite, natrolite, and analcime.

7) An up to one metre thick bright orange ferriferous silaceous bed with abundant radiolaria, with a thin band of manganite and pyrolusite at the base.

8) Uppermost 0.5 metre thick phosphatic argillaceous limestone to shale.



Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Tschernich, R. (1992): Zeolites of the World
β“˜ Calcite
Formula: CaCO3
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ Celadonite
Formula: K(MgFe3+◻)(Si4O10)(OH)2
Reference: Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
β“˜ 'Chlorite Group'
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ 'Clinopyroxene Subgroup'
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ 'Glass'
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ 'Glauconite'
Formula: (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ Hematite
Formula: Fe2O3
Reference: http://crownminerals.med.govt.nz/minerals/docs/comreports/report07_manganese.pdf
β“˜ 'Limonite'
Reference: http://crownminerals.med.govt.nz/minerals/docs/comreports/report07_manganese.pdf
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Reference: Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
β“˜ Manganite
Formula: Mn3+O(OH)
Reference: http://crownminerals.med.govt.nz/minerals/docs/comreports/report07_manganese.pdf
β“˜ Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Reference: Tschernich, R. (1992): Zeolites of the World
β“˜ 'Psilomelane'
Reference: http://crownminerals.med.govt.nz/minerals/docs/comreports/report07_manganese.pdf
β“˜ Pyrolusite
Formula: Mn4+O2
Reference: http://crownminerals.med.govt.nz/minerals/docs/comreports/report07_manganese.pdf
β“˜ 'Thomsonite'
Reference: Tschernich, R. (1992): Zeolites of the World

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Manganite4.FD.15Mn3+O(OH)
β“˜Pyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Analcime9.GB.05Na(AlSi2O6) Β· H2O
β“˜Celadonite9.EC.15K(MgFe3+β—»)(Si4O10)(OH)2
β“˜'Glauconite'9.EC.(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
β“˜Natrolite9.GA.05Na2Al2Si3O10 Β· 2H2O
Unclassified Minerals, Rocks, etc.
β“˜'Chlorite Group'-
β“˜'Clinopyroxene Subgroup'-
β“˜'Glass'-
β“˜'Limonite'-
β“˜'Psilomelane'-
β“˜'Thomsonite'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Hβ“˜ ManganiteMn3+O(OH)
Hβ“˜ AnalcimeNa(AlSi2O6) · H2O
Hβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Hβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Oβ“˜ ManganiteMn3+O(OH)
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ HematiteFe2O3
Oβ“˜ AnalcimeNa(AlSi2O6) · H2O
Oβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Oβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Oβ“˜ CalciteCaCO3
Oβ“˜ MagnetiteFe2+Fe23+O4
NaSodium
Naβ“˜ AnalcimeNa(AlSi2O6) · H2O
Naβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Naβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
MgMagnesium
Mgβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Mgβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
AlAluminium
Alβ“˜ AnalcimeNa(AlSi2O6) · H2O
Alβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Alβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
SiSilicon
Siβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Siβ“˜ AnalcimeNa(AlSi2O6) · H2O
Siβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Siβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
KPotassium
Kβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Kβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
MnManganese
Mnβ“˜ ManganiteMn3+O(OH)
Mnβ“˜ PyrolusiteMn4+O2
FeIron
Feβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
Feβ“˜ HematiteFe2O3
Feβ“˜ Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Feβ“˜ MagnetiteFe2+Fe23+O4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Kobe, H.W. (1976) Petrography and mineralization of Karamea (Red Island) southern Hawkes Bay, Tane, 22. 139-143.
Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).

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