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Uguisu Beach, Ani Island (Anijima), Chichijima Group, Ogasawara Islands, Ogasawara Subprefecture, Tokyo Metropolis, Japan i
Regional Level Types
Uguisu Beach Outcrop
Ani Island (Anijima) Island
Chichijima Group - not defined -
Ogasawara Islands Group of Islands
Ogasawara Subprefecture Subprefecture
Tokyo Metropolis Prefecture
Japan Country

Regional Level Types
Uguisu Beach	Outcrop
Ani Island (Anijima)	Island
Chichijima Group	- not defined -
Ogasawara Islands	Group of Islands
Ogasawara Subprefecture	Subprefecture
Tokyo Metropolis	Prefecture
Japan	Country

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Latitude & Longitude (WGS84):

27° 7' 29'' North , 142° 11' 27'' East

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Cfa : Humid subtropical climate

Nearest Settlements:

Place	Population	Distance
Hutami	897 (2010)	4.8km

Mindat Locality ID:

420704

Long-form identifier:

mindat:1:2:420704:0

GUID (UUID V4):

The "okenite-like mineral" (Momma et al., 2015) may be a new mineral related to okenite.

Boninite and/or bronzite andesite dikes are present.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Celadonite

ⓘ Enstatite

ⓘ var. Bronzite

ⓘ Fluorapophyllite-(K)

ⓘ 'Heulandite Subgroup'

ⓘ Hydroxyapophyllite-(K)

ⓘ Okenite

ⓘ 'Phillipsite Subgroup'

ⓘ Quartz

6 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

ⓘ Hyaloclastite

Entries shown in red are rocks recorded for this region.

Igneous rock
- Glassy igneous rock

Detailed Mineral List:

ⓘ Celadonite

Formula: K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂

References:

Momma, Koichi, Takashi Sano, Toshiro Nagase, Ritsuro Miyawaki, and Satoshi Matsubara (2015) An okenite-like mineral from Anijima Island, Ogasawara Islands, Tokyo, Japan. Bull. Natl. Mus. Nat. Sci., Ser. C, 41, 45–52.

ⓘ Enstatite

Formula: Mg₂Si₂O₆

References:

ⓘ Enstatite var. Bronzite

Formula: (Mg,Fe²⁺)₂[SiO₃]₂

References:

ⓘ Fluorapophyllite-(K)

Formula: KCa₄(Si₈O₂₀)(F,OH) · 8H₂O

References:

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

References:

ⓘ Hydroxyapophyllite-(K)

Formula: KCa₄(Si₈O₂₀)(OH,F) · 8H₂O

References:

ⓘ Okenite

Formula: Ca₁₀Si₁₈O₄₆ · 18H₂O

References:

ⓘ 'Phillipsite Subgroup'

Formula: (Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

References:

ⓘ Quartz

Formula: SiO₂

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 9 - Silicates
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	var. Bronzite	9.DA.05	(Mg,Fe²⁺)₂[SiO₃]₂
ⓘ	Fluorapophyllite-(K)	9.EA.15	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
ⓘ	Hydroxyapophyllite-(K)	9.EA.15	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
ⓘ	Okenite	9.EA.40	Ca₁₀Si₁₈O₄₆ · 18H₂O
ⓘ	Celadonite	9.EC.15	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Unclassified
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Phillipsite Subgroup'	-	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
H	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
H	ⓘ Okenite	Ca₁₀Si₁₈O₄₆ · 18H₂O
H	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
O	Oxygen
O	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
O	ⓘ Okenite	Ca₁₀Si₁₈O₄₆ · 18H₂O
O	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Enstatite var. Bronzite	(Mg,Fe²⁺)₂[SiO₃]₂
F	Fluorine
F	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
F	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
Na	Sodium
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Mg	Magnesium
Mg	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Enstatite var. Bronzite	(Mg,Fe²⁺)₂[SiO₃]₂
Al	Aluminium
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Si	Silicon
Si	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
Si	ⓘ Okenite	Ca₁₀Si₁₈O₄₆ · 18H₂O
Si	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Si	ⓘ Quartz	SiO₂
Si	ⓘ Enstatite var. Bronzite	(Mg,Fe²⁺)₂[SiO₃]₂
K	Potassium
K	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
K	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
K	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Ca	Calcium
Ca	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O
Ca	ⓘ Okenite	Ca₁₀Si₁₈O₄₆ · 18H₂O
Ca	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Fe	Iron
Fe	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Fe	ⓘ Enstatite var. Bronzite	(Mg,Fe²⁺)₂[SiO₃]₂
Ba	Barium
Ba	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

Other Regions, Features and Areas containing this locality

Eurasian Plate

Izu-Bonin ForearcAccretionary Complex

Philippine Sea 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

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