Small, discrete masses of albitites in coarse-grained biotite granite around the summit of Mt Kuresaka. The largest body of albitite is several tens of meters in diameter; smaller ones are up to several tens of centimeters to meters wide. They are distributed over an area of 1.5 x 0.8 km2.

Biotite granites are widely distributed throughout the islet. The granites can be divided into coarse-, medium-, and fine-grained types. The coarse-grained granite occurs mainly as sheets in the western, eastern, and northern parts of the islet, and at topographically lower levels, as compared with the medium-grained granite. The fine-grained granite forms tabular bodies that intrude on the upper part of medium-grained granite around Mount Sekizen-san. These granites are vertically stacked, sheet-like bodies that can be explained by a sheet-on-sheet model.
The albitites occur as many small, discrete bodies in the coarse-grained biotite granite (hereafter, the protolith granite is referred to as the biotite granite) around the summit of Mount Kuresaka in the eastern part of the islet. The largest body of albitite is ~30 m in diameter, and small albitite bodies (several tens of centimeters to meters in width) are generally oriented in a N–S direction and irregularly distributed over an area of 1.5 × 0.8 km2.
The relationship between the albitite and surrounding biotite granite is gradational, and no crosscutting relationships can be found between the albitized granite and quartz albitite. The albitized granite contains aegirine-augite and ferro-ferri-holmquistite-bearing quartz veins.
The albitites in Iwaki Islet can be classified based on mineralogy into (1) biotite granite (protolith), (2) albitized granite, (3) quartz albitite, (4) hedenbergite albitite, (5) aegirine albitite, (6) sugilite albitite, and (7) katayamalite albitite. These albitites and albitized granite vary in scale from a few centimeters to hundreds of meters.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Aegirine

ⓘ 'Calcic plagioclase'

ⓘ 'Clinopyroxene Subgroup'

ⓘ Ferro-ferri-holmquistite

ⓘ Fluorapatite

ⓘ Fluorbritholite-(Ce)

ⓘ Fluorcalciobritholite

52 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

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

References:

Imaoka, Teruyoshi, Akita, Sachiho, Nagashima, Mariko (2021) Dalyite (K₂ZrSi₆O₁₅) and Zektzerite (LiNaZrSi₆O₁₅) in Aegirine-bearing Albitite from Iwagi Islet, SW Japan. Journal of Geography (Chigaku Zasshi), 130 (3) 369-378 doi:10.5026/jgeography.130.369

Imaoka, Teruyoshi; Akita, Sachiho; Ishikawa, Tsuyoshi; Tani, Kenichiro; Kimura, Jun-Ichi; Chang, Qing; Nagashima, Mariko (2024) Petrogenesis of an Episyenite from Iwagi Islet, Southwest Japan: Unique Li–Na Metasomatism during the Turonian. Minerals, 14 (9). 929 doi:10.3390/min14090929

ⓘ Aegirine-augite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆

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ⓘ Albite

Formula: Na(AlSi₃O₈)

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ⓘ Albite var. High Albite

Formula: NaAlSi₃O₈

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ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

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ⓘ 'Alkali Feldspar'

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ⓘ 'Allanite Group'

Formula: (A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

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ⓘ Andradite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

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ⓘ Arapovite

Formula: (K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)

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ⓘ Arsenopyrite

Formula: FeAsS

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ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

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ⓘ Baddeleyite

Formula: ZrO₂

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ⓘ Baryte

Formula: BaSO₄

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ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

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ⓘ 'Britholite Group'

Formula: (REE,Ca)₅[(Si,P)O₄]₃X

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ⓘ 'Calcic plagioclase'

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ⓘ Calcite

Formula: CaCO₃

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ⓘ Cassiterite

Formula: SnO₂

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ⓘ Chalcopyrite

Formula: CuFeS₂

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ⓘ 'Chlorite Group'

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ⓘ 'Clinopyroxene Subgroup'

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ⓘ Dalyite

Formula: K₂ZrSi₆O₁₅

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ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

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ⓘ 'Feldspar Group'

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ⓘ 'Feldspar Group var. Perthite'

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ⓘ 'Fergusonite'

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ⓘ Ferro-ferri-holmquistite

Formula: ◻{Li₂}{Fe²⁺₃Fe³⁺₂}(Si₈O₂₂)(OH)₂

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ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

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ⓘ Fluorbritholite-(Ce)

Formula: (Ce,Ca)₅(SiO₄)₃F

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ⓘ Fluorcalciobritholite

Formula: (Ca,REE)₅(SiO₄,PO₄)₃F

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ⓘ Fluorite

Formula: CaF₂

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ⓘ Galena

Formula: PbS

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ⓘ Gittinsite

Formula: CaZrSi₂O₇

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ⓘ Hedenbergite

Formula: CaFe²⁺Si₂O₆

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ⓘ Huttonite

Formula: ThSiO₄

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ⓘ Ilmenite

Formula: Fe²⁺TiO₃

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ⓘ Katayamalite

Formula: KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂

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ⓘ 'K Feldspar'

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ⓘ Kristiansenite

Formula: Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂

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ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

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ⓘ Microcline

Formula: K(AlSi₃O₈)

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ⓘ Miserite

Formula: K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O

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ⓘ Monazite-(Ce)

Formula: Ce(PO₄)

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ⓘ 'Monazite Group'

Formula: REE(PO₄)

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ⓘ Monazite-(La)

Formula: La(PO₄)

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ⓘ Monazite-(Nd)

Formula: Nd(PO₄)

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ⓘ Murakamiite

Formula: LiCa₂Si₃O₈(OH)

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ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

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ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

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ⓘ Opal

Formula: SiO₂ · nH₂O

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ⓘ Pectolite

Formula: NaCa₂Si₃O₈(OH)

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ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

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ⓘ Polylithionite

Formula: KLi₂Al(Si₄O₁₀)(F,OH)₂

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ⓘ Pyrite

Formula: FeS₂

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ⓘ Quartz

Formula: SiO₂

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ⓘ Scheelite

Formula: Ca(WO₄)

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ⓘ Sogdianite

Formula: K◻₂Zr₂Li₃[Si₁₂O₃₀]

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ⓘ Sphalerite

Formula: ZnS

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ⓘ Sugilite

Formula: KNa₂Fe³⁺₂Li₃[Si₁₂O₃₀]

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ⓘ Tainiolite

Formula: KLiMg₂(Si₄O₁₀)F₂

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ⓘ Thorite

Formula: Th(SiO₄)

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ⓘ Thorite var. Uranothorite

Formula: (Th,U)SiO₄

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ⓘ Titanite

Formula: CaTi(SiO₄)O

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ⓘ Truscottite

Formula: (Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O

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ⓘ Turkestanite

Formula: (K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O

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ⓘ 'Wolframite Group'

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ⓘ Wollastonite

Formula: Ca₃(Si₃O₉)

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ⓘ Xenotime-(Y)

Formula: Y(PO₄)

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ⓘ Zektzerite

Formula: LiNaZrSi₆O₁₅

References:

ⓘ Zircon

Formula: Zr(SiO₄)

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
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Cassiterite	4.DB.05	SnO₂
ⓘ	'Wolframite Group'	4.DB.30 va
ⓘ	Baddeleyite	4.DE.35	ZrO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
ⓘ	Scheelite	7.GA.05	Ca(WO₄)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
ⓘ	Monazite-(Ce)	8.AD.50	Ce(PO₄)
ⓘ	Monazite-(La)	8.AD.50	La(PO₄)
ⓘ	Monazite-(Nd)	8.AD.50	Nd(PO₄)
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Andradite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	Thorite	9.AD.30	Th(SiO₄)
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Thorite var. Uranothorite	9.AD.30	(Th,U)SiO₄
ⓘ	Huttonite	9.AD.35	ThSiO₄
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Fluorbritholite-(Ce)	9.AH.25	(Ce,Ca)₅(SiO₄)₃F
ⓘ	Fluorcalciobritholite	9.AH.25	(Ca,REE)₅(SiO₄,PO₄)₃F
ⓘ	Gittinsite	9.BC.05	CaZrSi₂O₇
ⓘ	Kristiansenite	9.BC.30	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Turkestanite	9.CH.10	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
ⓘ	Arapovite	9.CH.10	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
ⓘ	Katayamalite	9.CJ.25	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
ⓘ	Sogdianite	9.CM.05	K◻₂Zr₂Li₃[Si₁₂O₃₀]
ⓘ	Sugilite	9.CM.05	KNa₂Fe³⁺₂Li₃[Si₁₂O₃₀]
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Hedenbergite	9.DA.15	CaFe²⁺Si₂O₆
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Ferro-ferri-holmquistite	9.DD.05	◻{Li₂}{Fe²⁺₃Fe³⁺₂}(Si₈O₂₂)(OH)₂
ⓘ	Pectolite	9.DG.05	NaCa₂Si₃O₈(OH)
ⓘ	Wollastonite	9.DG.05	Ca₃(Si₃O₉)
ⓘ	Murakamiite	9.DG.05	LiCa₂Si₃O₈(OH)
ⓘ	Miserite	9.DG.85	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
ⓘ	Zektzerite	9.DN.05	LiNaZrSi₆O₁₅
ⓘ	Dalyite	9.EA.25	K₂ZrSi₆O₁₅
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Tainiolite	9.EC.15	KLiMg₂(Si₄O₁₀)F₂
ⓘ	Muscovite var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Polylithionite	9.EC.20	KLi₂Al(Si₄O₁₀)(F,OH)₂
ⓘ	Truscottite	9.EE.35	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ	var. High Albite	9.FA.35	NaAlSi₃O₈
Unclassified
ⓘ	'Alkali Feldspar'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Chlorite Group'	-
ⓘ	'Feldspar Group'	-
ⓘ	'Monazite Group'	-	REE(PO₄)
ⓘ	'Feldspar Group var. Perthite'	-
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'K Feldspar'	-
ⓘ	'Fergusonite'	-
ⓘ	'Britholite Group'	-	(REE,Ca)₅[(Si,P)O₄]₃X
ⓘ	'Allanite Group'	-	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	'Calcic plagioclase'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
H	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
H	ⓘ Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
H	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
H	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
H	ⓘ Ferro-ferri-holmquistite	◻{Li₂}{Fe₃²⁺Fe₂³⁺}(Si₈O₂₂)(OH)₂
H	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Murakamiite	LiCa₂Si₃O₈(OH)
Li	Lithium
Li	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
Li	ⓘ Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
Li	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
Li	ⓘ Zektzerite	LiNaZrSi₆O₁₅
Li	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
Li	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
Li	ⓘ Ferro-ferri-holmquistite	◻{Li₂}{Fe₃²⁺Fe₂³⁺}(Si₈O₂₂)(OH)₂
Li	ⓘ Murakamiite	LiCa₂Si₃O₈(OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Baddeleyite	ZrO₂
O	ⓘ Baryte	BaSO₄
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Cassiterite	SnO₂
O	ⓘ Dalyite	K₂ZrSi₆O₁₅
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Fluorbritholite-(Ce)	(Ce,Ca)₅(SiO₄)₃F
O	ⓘ Gittinsite	CaZrSi₂O₇
O	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
O	ⓘ Huttonite	ThSiO₄
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
O	ⓘ Monazite Group	REE(PO₄)
O	ⓘ Monazite-(Ce)	Ce(PO₄)
O	ⓘ Monazite-(La)	La(PO₄)
O	ⓘ Monazite-(Nd)	Nd(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
O	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Scheelite	Ca(WO₄)
O	ⓘ Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
O	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
O	ⓘ Thorite	Th(SiO₄)
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
O	ⓘ Wollastonite	Ca₃(Si₃O₉)
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Zektzerite	LiNaZrSi₆O₁₅
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
O	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
O	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
O	ⓘ Thorite var. Uranothorite	(Th,U)SiO₄
O	ⓘ Albite var. High Albite	NaAlSi₃O₈
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
O	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
O	ⓘ Fluorcalciobritholite	(Ca,REE)₅(SiO₄,PO₄)₃F
O	ⓘ Britholite Group	(REE,Ca)₅[(Si,P)O₄]₃X
O	ⓘ Ferro-ferri-holmquistite	◻{Li₂}{Fe₃²⁺Fe₂³⁺}(Si₈O₂₂)(OH)₂
O	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Murakamiite	LiCa₂Si₃O₈(OH)
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Fluorbritholite-(Ce)	(Ce,Ca)₅(SiO₄)₃F
F	ⓘ Fluorite	CaF₂
F	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
F	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
F	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
F	ⓘ Fluorcalciobritholite	(Ca,REE)₅(SiO₄,PO₄)₃F
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Na	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
Na	ⓘ Zektzerite	LiNaZrSi₆O₁₅
Na	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
Na	ⓘ Albite var. High Albite	NaAlSi₃O₈
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
Al	ⓘ Albite var. High Albite	NaAlSi₃O₈
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Dalyite	K₂ZrSi₆O₁₅
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Fluorbritholite-(Ce)	(Ce,Ca)₅(SiO₄)₃F
Si	ⓘ Gittinsite	CaZrSi₂O₇
Si	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Si	ⓘ Huttonite	ThSiO₄
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Si	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
Si	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
Si	ⓘ Thorite	Th(SiO₄)
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
Si	ⓘ Wollastonite	Ca₃(Si₃O₉)
Si	ⓘ Zektzerite	LiNaZrSi₆O₁₅
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
Si	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
Si	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
Si	ⓘ Thorite var. Uranothorite	(Th,U)SiO₄
Si	ⓘ Albite var. High Albite	NaAlSi₃O₈
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
Si	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
Si	ⓘ Fluorcalciobritholite	(Ca,REE)₅(SiO₄,PO₄)₃F
Si	ⓘ Britholite Group	(REE,Ca)₅[(Si,P)O₄]₃X
Si	ⓘ Ferro-ferri-holmquistite	◻{Li₂}{Fe₃²⁺Fe₂³⁺}(Si₈O₂₂)(OH)₂
Si	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Murakamiite	LiCa₂Si₃O₈(OH)
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Monazite Group	REE(PO₄)
P	ⓘ Monazite-(Ce)	Ce(PO₄)
P	ⓘ Monazite-(La)	La(PO₄)
P	ⓘ Monazite-(Nd)	Nd(PO₄)
P	ⓘ Xenotime-(Y)	Y(PO₄)
P	ⓘ Fluorcalciobritholite	(Ca,REE)₅(SiO₄,PO₄)₃F
P	ⓘ Britholite Group	(REE,Ca)₅[(Si,P)O₄]₃X
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Baryte	BaSO₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Dalyite	K₂ZrSi₆O₁₅
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
K	ⓘ Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
K	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
K	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
K	ⓘ Tainiolite	KLiMg₂(Si₄O₁₀)F₂
K	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Fluorbritholite-(Ce)	(Ce,Ca)₅(SiO₄)₃F
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Gittinsite	CaZrSi₂O₇
Ca	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Ca	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Pectolite	NaCa₂Si₃O₈(OH)
Ca	ⓘ Scheelite	Ca(WO₄)
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
Ca	ⓘ Wollastonite	Ca₃(Si₃O₉)
Ca	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
Ca	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
Ca	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)
Ca	ⓘ Fluorcalciobritholite	(Ca,REE)₅(SiO₄,PO₄)₃F
Ca	ⓘ Britholite Group	(REE,Ca)₅[(Si,P)O₄]₃X
Ca	ⓘ Murakamiite	LiCa₂Si₃O₈(OH)
Sc	Scandium
Sc	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Titanite	CaTi(SiO₄)O
Ti	ⓘ Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂
Mn	Manganese
Mn	ⓘ Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Hedenbergite	CaFe²⁺Si₂O₆
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Sugilite	KNa₂Fe₂³⁺Li₃[Si₁₂O₃₀]
Fe	ⓘ Ferro-ferri-holmquistite	◻{Li₂}{Fe₃²⁺Fe₂³⁺}(Si₈O₂₂)(OH)₂
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
Y	Yttrium
Y	ⓘ Miserite	K_1.5-x(Ca,Y,REE)₅(Si₆O₁₅)(Si₂O₇)(OH,F)₂ · yH₂O
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Zr	Zirconium
Zr	ⓘ Baddeleyite	ZrO₂
Zr	ⓘ Dalyite	K₂ZrSi₆O₁₅
Zr	ⓘ Gittinsite	CaZrSi₂O₇
Zr	ⓘ Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
Zr	ⓘ Zektzerite	LiNaZrSi₆O₁₅
Zr	ⓘ Zircon	Zr(SiO₄)
Sn	Tin
Sn	ⓘ Cassiterite	SnO₂
Sn	ⓘ Kristiansenite	Ca₄(Sc₂Sn₂)[Si₂O₇]₂[Si₂O₆OH]₂
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
La	Lanthanum
La	ⓘ Monazite-(La)	La(PO₄)
Ce	Cerium
Ce	ⓘ Fluorbritholite-(Ce)	(Ce,Ca)₅(SiO₄)₃F
Ce	ⓘ Monazite-(Ce)	Ce(PO₄)
Nd	Neodymium
Nd	ⓘ Monazite-(Nd)	Nd(PO₄)
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)
Pb	Lead
Pb	ⓘ Galena	PbS
Th	Thorium
Th	ⓘ Huttonite	ThSiO₄
Th	ⓘ Thorite	Th(SiO₄)
Th	ⓘ Turkestanite	(K,◻)(Ca,Na)₂ThSi₈O₂₀ · nH₂O
Th	ⓘ Thorite var. Uranothorite	(Th,U)SiO₄
U	Uranium
U	ⓘ Thorite var. Uranothorite	(Th,U)SiO₄
U	ⓘ Arapovite	(K_1-x◻_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x ~ 0.5)

Other Regions, Features and Areas containing this locality

Amur PlateTectonic Plate

Eurasian Plate

Southern Japan ForearcAccretionary Complex

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References

[1]Imaoka, Teruyoshi; Akita, Sachiho; Ishikawa, Tsuyoshi; Tani, Kenichiro; Kimura, Jun-Ichi; Chang, Qing; Nagashima, Mariko (2024) Petrogenesis of an Episyenite from Iwagi Islet, Southwest Japan: Unique Li–Na Metasomatism during the Turonian. Minerals, 14 (9). 929 doi:10.3390/min14090929

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