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Tobelite

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Collectors Summary

Color

gelblich grün, perlweiß

Streak color

weiß

Lustre

stumpf

Hardness (Mohs)

Crystal System

monoklin, C2/m

Chemism

Chemical formula

(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂

Chemical composition

Aluminium, Silicium, Kalium, Sauerstoff, Stickstoff, Wasserstoff

Unit weight: 382.5137171 u; Number of atoms in the formula: 24

Info

Empirical formula:

((NH₄)_0.75K_0.25)Al₂(Si₃Al)O₁₀(OH)₂

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Hydrogen	H	1.32	5	20.83	1.0079470	5.0397350
Nitrogen	N	2.75	0.75	3.13	14.0067200	10.5050400
Oxygen	O	50.19	12	50.00	15.9994300	191.9931600
Aluminium	Al	21.16	3	12.50	26.9815382	80.9446146
Silicon	Si	22.03	3	12.50	28.0855300	84.2565900
Potassium	K	2.56	0.25	1.04	39.0983100	9.7745775

Search for minerals with similar chemistry

Strunz 9th edition incl. updates

9.EC.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
15:Muskovit-Gruppe

Lapis Classification

VIII/H.10-100

VIII: SILIKATE
H: Schichtsilikate
10: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Seladonit/Muskovit-Reihe (Phengite)

Classification by Hölzel

9.EC.100

9: SILICATES
E: Phyllosilicates
C: Micas-Group
1: ~[(OH)₂|AlSi₃O₁₀] Muscovite-Group

Hey's Chemical Index of Minerals

16.05.05

16: Silicates Containing Aluminum and other Metals
05: Aluminosilicates of Cs, NH4 and Cu

Dana 8th edition

71.02.02a.07

71: Phyllosilicate Minerals
02: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 2:1 Layers
02a: Mica Group (Muscovite subgroup)

IMA status

anerkannt; = 1M Polytyp

Mineral status

anerkanntes Mineral

IMA Classification

Mica group ⇒ True micas

Optical Properties

Color	gelblich grün, perlweiß
Streak color	weiß
Diaphaneity (Transparency)	durchscheinend
Lustre	stumpf
max. Birefringence	0.026
	$Birefringence chart\! Tobelite title=Birefringence chart Tobelite$ Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.
RI value α / ω / n	1.555
RI value β	1.575
RI value γ / ε	1.581
Ri mean	1.570
2V angle	Biaxial (-) 28°

Crystallography

Crystal System	monoklin
Class (H-M)	2/m
Space Group number	12
Space Group	C2/m
Cell parameters a (Å)	5.219
Cell parameters b (Å)	8.986
Cell parameters c (Å)	10.447
Cell parameters a/b or c/a	0.581
Cell parameters c/b	1.163
Cell parameters α	90°
Cell parameters β	101.32
Cell parameters γ	90°
Z	2
Volumne (Å³)	480.411
X-Ray Powder Diffraction	10.44(100), 5.12(70), 4.486(70), 4.360(30), 3.685(30), 3.408(60), 3.103(30), 2.566(40)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

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Crystal Structure 3D

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Physical Properties

Hardness (Mohs)	2
VHN (Hardness Vickers)	32 (ungefähre Angabe abgeleitet aus der Mohshärte)
Density (g/cm³)	2.58 (gemessen) 2.617 /berechnet)
	2.644 ( ρ calc. Mineralienatlas )

(Co-)Type locality

Japan /Shikoku /Ehime, Präfektur /Tobe /Ohgidani Lagerstätte

Preface

Name from	Typlokalität (Tobe)
Author (Name, Year)	Higashi, 1982

References

Mineralogical Journal (Tokyo) 11 (1982), 138.

American Mineralogist 68 (1983), 850.

Canadian Mineralogist 36 (1998), 905-912.

Physics and Chemistry of Minerals 28 (2001), 268.

American Mineralogist 87 (2002), 1686.

IMA group assignments

Mica group

True micas

Aluminoceladonite

K(Mg,Fe²⁺)Al[(OH)₂|Si₄O₁₀]

monoklin

Annite

KFe²⁺₃(Si₃Al)O₁₀(OH,F)₂

monoklin

C2/m

Aspidolite-1M

NaMg₃(AlSi₃)O₁₀(OH)₂

monoklin

C2/m

Boromuscovite

KAl₂(Si₃B)O₁₀(OH,F)₂

monoklin

C2/m

Celadonite

K(Mg,Fe²⁺)(Fe³⁺,Al)Si₄O₁₀(OH)₂

monoklin

Chromphyllite

K(Cr,Al)₂[(OH,F)₂|AlSi₃O₁₀]

monoklin

C2/c

Eastonite

KMg₂Al[(OH)₂|Al₂Si₂O₁₀]

monoklin

Ephesite

NaLiAl₂(Al₂Si₂)O₁₀(OH)₂

monoklin

Ferroaluminoceladonite

K(Fe²⁺,Mg)(Al,Fe³⁺)[(OH)₂|Si₄O₁₀]

monoklin

C2/m

Ferroceladonite

K(Fe²⁺,Mg)(Fe³⁺,Al)[(OH)₂|Si₄O₁₀]

monoklin

C2/m

Fluorannite

KFe₃²⁺[(F,OH)₂|AlSi₃O₁₀]

monoklin

C2/m

Ganterite

(Ba,Na,K)(Al,Mg)₂[(OH,F)₂|(Al,Si)Si₂O₁₀]

monoklin

C2/c

Hendricksite

K(Zn,Mn)₃Si₃AlO₁₀(OH)₂

monoklin

C2/m

Masutomilite

K(Li,Al,Mn²⁺)₃(Si,Al)₄O₁₀(F,OH)₂

monoklin

Montdorite

KMn_0.5²⁺Fe_1.5²⁺Mg_0.5[F₂|Si₄O₁₀]

monoklin

C2/m

Muscovite

KAl₂(Si₃Al)O₁₀(OH,F)₂

monoklin

C2/c

Nanpingite

CsAl₂(Si,Al)₄O₁₀(OH,F)₂

monoklin

C2/c

Norrishite

KLiMn³⁺₂Si₄O₁₂

monoklin

C2/m

Paragonite

NaAl₂(Si₃Al)O₁₀(OH)₂

monoklin

C2/c

Phlogopite

KMg₃(Si₃Al)O₁₀(F,OH)₂

monoklin

C2/m

Polylithionite

KLi₂AlSi₄O₁₀(F,OH)₂

monoklin

C2/m

Preiswerkite

NaMg₂Al₃Si₂O₁₀(OH)₂

monoklin

C2/m

Roscoelite

K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂

monoklin

C2/m

Shirozulite

K(Mn²⁺,Mg)₃[(OH)₂|AlSi₃O₁₀]

Siderophyllite

KFe₂²⁺Al(Al₂Si₂)O₁₀(F,OH)₂

monoklin

C2/m

Sokolovaite

CsLi₂AlSi₄O₁₀F₂

monoklin

Tainiolite

KLiMg₂Si₄O₁₀F₂

monoklin

C/2m

Tetraferriannite

KFe²⁺₃(Si₃Fe³⁺)O₁₀(OH)₂

monoklin

C2/m

Tetraferriphlogopite

KMg₃[(F,OH)₂|(Al,Fe³⁺)Si₃O₁₀]

monoklin

C2/m

Tobelite

(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂

monoklin

C2/m

Trilithionite

KLi_1.5Al_1.5[F₂|AlSi₃O₁₀]

monoklin

C2/m

Yangzhumingite

KMg_2.5Si₄O₁₀F₂

monoklin

C2/m

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Actuality: 13. Apr 2021 - 08:23:23

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Sericite' (Var.v. Muscovite)		9.EC.15
Ganterite	(Ba,Na,K)(Al,Mg)₂[(OH,F)₂\|(Al,Si)Si₂O₁₀] monoklin : 2/m : C2/c	9.EC.15
Muscovite	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.15
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
'Glauconite'	(K,Na)(Fe³⁺,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
Montdorite	KMn_0.5²⁺Fe_1.5²⁺Mg_0.5[F₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15
Nanpingite	CsAl₂(Si,Al)₄O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.15
Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.15
Celadonite	K(Mg,Fe²⁺)(Fe³⁺,Al)Si₄O₁₀(OH)₂ monoklin : 2 : C2	9.EC.15
Chernykhite	BaV₂(Si₂Al₂)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.15
Roscoelite	K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
Tainiolite	KLiMg₂Si₄O₁₀F₂ monoklin : 2/m : C/2m	9.EC.15
Voloshinite	Rb(LiAl_1.5☐_0.5)(Al_0.5Si_3.5)O₁₀F₂ monoklin : C2/c	9.EC.15
Cossaite	(Mg_0.5,◻)Al₆(SO₄)₆(HSO₄)F₆·36H₂O trigonal : 3 : R3	9.EC.15
'Muscovite-1M' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	9.EC.15
'Muscovite-2A' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ triklin : 1 : C1	9.EC.15
'Boromuscovite'	KAl₂(Si₃B)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	9.EC.15
Chromphyllite	K(Cr,Al)₂[(OH,F)₂\|AlSi₃O₁₀] monoklin : 2/m : C2/c	9.EC.15
'Muscovite-3T' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ trigonal : 32 : P3₁12	9.EC.15
'Muscovite-2M2' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m	9.EC.15
Chromceladonite	KMgCr[(OH)₂\|Si₄O₁₀] monoklin : 2 : C2	9.EC.15
Ferroceladonite	K(Fe²⁺,Mg)(Fe³⁺,Al)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15
Aluminoceladonite	K(Mg,Fe²⁺)Al[(OH)₂\|Si₄O₁₀] monoklin	9.EC.15
Manganiceladonite	KMgMn³⁺Si₄O₁₀(OH)₂ monoklin : 2/m, 2 : C2, C2/m	9.EC.15
'Zweiaxiger glimmer'	KAl₂(Si,Al)₄O₁₀(OH)₂	9.EC.15
Ferroaluminoceladonite	K(Fe²⁺,Mg)(Al,Fe³⁺)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Aluminoceladonite	K(Mg,Fe²⁺)Al[(OH)₂\|Si₄O₁₀] monoklin	VIII/H.10-010
Ferroaluminoceladonite	K(Fe²⁺,Mg)(Al,Fe³⁺)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	VIII/H.10-020
Celadonite	K(Mg,Fe²⁺)(Fe³⁺,Al)Si₄O₁₀(OH)₂ monoklin : 2 : C2	VIII/H.10-030
Chromceladonite	KMgCr[(OH)₂\|Si₄O₁₀] monoklin : 2 : C2	VIII/H.10-035
Ferroceladonite	K(Fe²⁺,Mg)(Fe³⁺,Al)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	VIII/H.10-040
Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/c	VIII/H.10-050
'Boromuscovite'	KAl₂(Si₃B)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	VIII/H.10-060
Muscovite	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/c	VIII/H.10-070
Chromphyllite	K(Cr,Al)₂[(OH,F)₂\|AlSi₃O₁₀] monoklin : 2/m : C2/c	VIII/H.10-080
Roscoelite	K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂ monoklin : 2/m : C2/m	VIII/H.10-090
Ganterite	(Ba,Na,K)(Al,Mg)₂[(OH,F)₂\|(Al,Si)Si₂O₁₀] monoklin : 2/m : C2/c	VIII/H.10-095
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	VIII/H.10-100
Nanpingite	CsAl₂(Si,Al)₄O₁₀(OH,F)₂ monoklin : 2/m : C2/c	VIII/H.10-110

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.100
Roscoelite	K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.120

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Talc	Mg₃Si₄O₁₀(OH)₂ monoklin : 2/m : C2/c	71.02.01.03
Willemseite	(Ni,Mg)₃Si₄O₁₀(OH)₂ monoklin : m : Cc	71.02.01.04
'Glauconite'	(K,Na)(Fe³⁺,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂ monoklin : 2/m : C2/m	71.02.02a.05
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	71.02.02a.07
'Tetraferriannite'	KFe²⁺₃(Si₃Fe³⁺)O₁₀(OH)₂ monoklin : 2/m : C2/m	71.02.02b.04
Sokolovaite	CsLi₂AlSi₄O₁₀F₂ monoklin	71.02.02b.08b
Zinkosite	ZnSO₄ orthorhombisch : mmm : Pnma	71.02.02b.10
'Zinnwaldite'	KLiFe²⁺Al(AlSi₃)O₁₀(F,OH)₂ monoklin : 2 : C2	71.02.02b.10
'Ephesite'	NaLiAl₂(Al₂Si₂)O₁₀(OH)₂ monoklin : m : Cc	71.02.02b.16
Clintonite	Ca(Mg,Al)₃(Al₃Si)O₁₀(OH)₂ monoklin : 2/m, m : C2/m, ?	71.02.02c.02
Anandite	(Ba,K)(Fe²⁺,Mg)₃(Si,Al,Fe)₄O₁₀(S,OH)₂ monoklin : 2/m : C2/c	71.02.02c.04
Oxykinoshitalite	(Ba,K)(Mg,Fe²⁺,Ti⁴⁺)₃(Si,Al)₄O₁₀O₂ monoklin : 2/m : C2/m	71.02.02c.08
Hydrobiotite	K(Mg,Fe²⁺)₆(Si,Al)₈O₂₀(OH)₄·nH₂O monoklin : 2/m : C2/m	71.02.02d.01
Cuprorivaite	CaCuSi₄O₁₀ tetragonal : 4/mmm : P4/ncc	71.02.03.01
Gillespite	BaFe²⁺Si₄O₁₀ tetragonal : 4/mmm : P4/ncc	71.02.03.02
Effenbergerite	BaCu[Si₄O₁₀] tetragonal : 4/mmm : P4/ncc	71.02.03.03
Wesselsite	Sr_0.9Ba_0.1CuSi₄O₁₀ tetragonal : 4/mmm : P4/ncc	71.02.03.04
Ferrisurite	(Pb,Ca)_2-3(Fe³⁺,Al)₂[(OH,F)_2.5-3\|(CO₃)_1.5-2\|Si₄O₁₀]·0.5 H₂O monoklin : 2, 2/m : P2₁, P2₁/m	71.02.04.01
Surite	Pb₂Ca(Al,Mg)₂(Si,Al)₄O₁₀(OH)₂(CO₃,OH)₃·0.5 H₂O monoklin : 2 : P2₁	71.02.04.02
Niksergievite	(Ba, Ca)₂Al₃[(OH)₆\|CO₃\|(Si, Al)₄O₁₀]·0.2 H₂O monoklin : 2/m, 2, m : C2/m, C2, Cm	71.02.04.03
Macaulayite	(Fe³⁺,Al)₂₄Si₄O₄₃(OH)₂ monoklin	71.02.05.01

Related minerals "Hey's Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Pollucite	(Cs,Na)(Si₂Al)O₆·nH₂O kubisch : m3m : Ia3d	16.05.01
Ammonioleucite	(NH₄)(AlSi₂O₆) tetragonal : 4/m : I4₁/a	16.05.04
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	16.05.05

Other languages

Spanish	Tobelita
French	Tobelite
English	Tobelite
German	Tobelith
Russian	Тобелит

Alternative Name

	Tobelit
	Tobelita
Japanese	砥部石
Japanese	砥部雲母

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