Celadonite Mineral Data + 
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- 71.2.2a.1 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m
- 71.2.2a.2 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono
- 71.2.2a.3 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m
- 71.2.2a.4 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m
- 71.2.2a.5 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m
- 71.2.2a.6 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m
- 71.2.2a.6b Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m
- 71.2.2a.6c Ferro-aluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m
- 71.2.2a.6d Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m
- 71.2.2a.6e Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2
- 71.2.2a.7 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m
- 71.2.2a.8 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m
- 71.2.2a.9 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m
- 71.2.2a.10 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m
- 71.2.2a.11 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m
- 71.2.2a.12 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m
- VIII/H.10-10 Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m
- VIII/H.10-20 Ferro-aluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m
- VIII/H.10-30 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m
- VIII/H.10-35 Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2
- VIII/H.10-40 Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m
- VIII/H.10-50 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono
- VIII/H.10-60 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m
- VIII/H.10-70 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m
- VIII/H.10-80 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m
- VIII/H.10-90 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m
- VIII/H.10-95 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m
- VIII/H.10-100 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m
- VIII/H.10-110 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m
General Celadonite Information |
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 Chemical Formula: |
K(Mg,Fe++)(Fe+++,Al)[Si4O10](OH)2 | ||
| Composition: |
Molecular Weight = 429.02 gm | ||
| Potassium 9.11 % K 10.98 % K2O | |||
| Magnesium 4.53 % Mg 7.52 % MgO | |||
| Aluminum 0.63 % Al 1.19 % Al2O3 | |||
| Iron 14.32 % Fe 3.35 % FeO / 16.75 % Fe2O3 | |||
| Silicon 26.19 % Si 56.02 % SiO2 | |||
| Hydrogen 0.47 % H 4.20 % H2O | |||
| Oxygen 44.75 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
KMg0.8Fe2+0.2Fe3+0.9Al0.1Si4O10(OH)2 | ||
| Environment: |
Vesicle lining and coatings in altered volcanic of intermediate to basic compositions under low grade metamorphism. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1847 | ||
| Locality: |
Mt. Baldo, near Verona, Italy. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named from the French 'celadon,' sea-green, in allusion to its common color. | ||
| Synonym: |
ICSD 200064 | ||
| PDF 17-521 | |||
Celadonite Image | |||
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Images:
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Celadonite Crystallography |
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| Axial Ratios: |
a:b:c =0.5773:1:1.1271 | ||
| Cell Dimensions: |
a = 5.223, b = 9.047, c = 10.197, Z = 2; beta = 100.433° V = 473.87 Den(Calc)= 3.01 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.58(1), 4.53(0.85), 3.64(0.8), | ||
Physical Properties of Celadonite |
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| Cleavage: |
[001] Perfect | ||
| Color: |
Gray green, Bluish green. | ||
| Density: |
2.95 - 3.05, Average = 3 | ||
| Diaphaniety: |
Translucent to opaque | ||
| Fracture: |
Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite). | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Earthy (Dull) | ||
| Streak: |
greenish white | ||
Optical Properties of Celadonite |
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| Gladstone-Dale: |
CI meas= 0.043 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.046 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2123,KPDmeas= 0.2131,KC= 0.2226 |
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| Optical Data: |
Biaxial (-), a=1.606-1.644, b=1.63-1.662, g=1.63-1.663, bire=0.0190-0.0240, 2V(Calc)=0-26, 2V(Meas)=small. | ||
| Pleochroism (x): |
yellowish green or yellowish green. | ||
| Pleochroism (y): |
green or emerald green. | ||
| Pleochroism (z): |
green or emerald green. | ||
Calculated Properties of Celadonite |
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| Electron Density: |
relectron=2.97 gm/cc |
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| Fermion Index |
Fermion Index = 0.02002 Boson Index = 0.97998 |
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| Photoelectric: |
PECeladonite = 6.26 barns/electron |
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| Radioactivity: |
GRapi = 130.24 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Celadonite |
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Celadonite Classification |
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| Dana Class: |
71.2.2a.6 (71)Phyllosilicate Sheets of Six-Membered Rings | ||
| (71.2)with 2:1 Layers | |||
| (71.2.2a)Mica Group (Muscovite subgroup) | |||
| Strunz Class: |
VIII/H.10-30 VIII - Silicates | ||
| VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups | |||
| VIII/H.10 - Mica group, Muscovite series | |||
Other Celadonite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Celadonite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 - Minerals of Wisconsin 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Celadonite using: Visit our Advertisers for Celadonite : Translate Celadonite Mineral Data : Ask about Celadonite here : Print or Cut-and-Paste your Celadonite Specimen Label here :
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- barely detectable 
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