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CLAM hydrothermal field, Iheya Ridge, Okinawa Trough, Senkaku Islands (Diaoyudao Islands; Diaoyutai Islands), Ishigaki City, Okinawa Prefecture, Japan i
Regional Level Types
CLAM hydrothermal field Hydrothermal Vent
Iheya Ridge Oceanic Ridge
Okinawa Trough - not defined -
Senkaku Islands (Diaoyudao Islands; Diaoyutai Islands) Group of Islands
Ishigaki City City
Okinawa Prefecture Prefecture
Japan Country

Regional Level Types
CLAM hydrothermal field	Hydrothermal Vent
Iheya Ridge	Oceanic Ridge
Okinawa Trough	- not defined -
Senkaku Islands (Diaoyudao Islands; Diaoyutai Islands)	Group of Islands
Ishigaki City	City
Okinawa Prefecture	Prefecture
Japan	Country

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Latitude & Longitude (WGS84):

27° 32' 23'' North , 126° 58' 48'' East

Latitude & Longitude (decimal):

G#: wufk9t800

Type:

Mindat Locality ID:

434503

Long-form identifier:

mindat:1:2:434503:2

GUID (UUID V4):

Unique Mn-carbonate hydrothermal chimneys, located in a small depression on the northern slope along the eastern part of the Iheya Ridge in the middle Okinawa Trough.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Calcite

ⓘ var. Manganese-bearing Calcite

ⓘ Chalcopyrite

ⓘ Pyrite

ⓘ Rhodochrosite

ⓘ var. Calcium-bearing Rhodochrosite

ⓘ Sphalerite

5 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

ⓘ 'Andesite-basalt'

ⓘ Basaltoid

ⓘ Rhyolite

Detailed Mineral List:

ⓘ Calcite

Formula: CaCO₃

References:

Dekov, V.M., Yasuda, K., Kamenov, G., Yasukawa, K., Guéguen, B., Kano, A., Yoshimura, T., Yamanaka, T., Bindi, L., Okumura, T., Asael, D., Araoka, D., Kato, Y. (2023): Mn‑carbonate deposition in a seafloor hydrothermal system (CLAM field, Iheya Ridge, Okinawa Trough): Insights from mineralogy, geochemistry and isotope studies. Marine Geology: 460: 107055.

ⓘ Calcite var. Manganese-bearing Calcite

Formula: (Ca,Mn)CO₃

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Huang, X., Huang, C., Qi, Y., Wang, X., & Cao, H. (2021). Characteristics of hydrocarbons in hydrothermal products of the Clam hydrothermal field from the Okinawa trough. Marine Pollution Bulletin, 167, 112277.

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Rhodochrosite

Formula: MnCO₃

References:

ⓘ Rhodochrosite var. Calcium-bearing Rhodochrosite

Formula: (Mn,Ca)CO₃

References:

ⓘ Sphalerite

Formula: ZnS

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	var. Manganese-bearing Calcite	5.AB.05	(Ca,Mn)CO₃
ⓘ	Rhodochrosite	5.AB.05	MnCO₃
ⓘ	var. Calcium-bearing Rhodochrosite	5.AB.05	(Mn,Ca)CO₃

List of minerals for each chemical element

C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
C	ⓘ Rhodochrosite	MnCO₃
C	ⓘ Rhodochrosite var. Calcium-bearing Rhodochrosite	(Mn,Ca)CO₃
O	Oxygen
O	ⓘ Calcite	CaCO₃
O	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
O	ⓘ Rhodochrosite	MnCO₃
O	ⓘ Rhodochrosite var. Calcium-bearing Rhodochrosite	(Mn,Ca)CO₃
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Ca	ⓘ Rhodochrosite var. Calcium-bearing Rhodochrosite	(Mn,Ca)CO₃
Mn	Manganese
Mn	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Mn	ⓘ Rhodochrosite	MnCO₃
Mn	ⓘ Rhodochrosite var. Calcium-bearing Rhodochrosite	(Mn,Ca)CO₃
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pyrite	FeS₂
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS

Other Regions, Features and Areas containing this locality

Eurasian Plate

Okinawa TroughBack-arc Basin

Yangtze PlateTectonic Plate

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

Zhigang Zeng, Xiaoyuan Wang, Chen-Tung Arthur Chen, Haiyan Qi (2018) Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough. Hindawi Geofluids, Volume 2018, Article ID 1536352.

Zhang, Y., Chen, Z., Zeng, Z. (2023) Timescales of Magma Mixing Beneath the Iheya Ridge, Okinawa Trough: Implications for the Stability of Sub-Seafloor Magmatic Systems.Mar. Sci. Eng.: 1: 375; https://doi.org/10.3390/jmse11020375

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