Log In
Inesite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Inesite
Formula:
Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Colour:
Rose-red, pink, orange-pink, orange-red-brown
Lustre:
Vitreous, Silky
Hardness:
5½ - 6
Specific Gravity:
3.03 - 3.04
Crystal System:
Triclinic
Name:
Named by Adolf Schneider in 1887 from the Greek ÎÎœÎ”Ï (ines), 'flesh fibers', in allusion to its color and habit.
This page provides mineralogical data about Inesite.
Unique Identifiers
Mindat ID:
2031
Long-form identifier:
mindat:1:1:2031:8
Similar Names
IMA Classification of Inesite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ca2Mn2+7Si10O28(OH)2·5H2O
First published:
1887
Classification of Inesite
9.DL.05
9 : SILICATES (Germanates)
D : Inosilicates
L : Inosilicates with 5-periodic double chains, Si10O28
9 : SILICATES (Germanates)
D : Inosilicates
L : Inosilicates with 5-periodic double chains, Si10O28
66.3.3.1
66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
3 : Amphiboles - Ca-Na subgroup
66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
3 : Amphiboles - Ca-Na subgroup
14.18.21
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ins | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Ins | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Inesite
Vitreous, Silky
Transparency:
Translucent
Colour:
Rose-red, pink, orange-pink, orange-red-brown
Comment:
Weathers to ginger brown
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {010}
Good on {100}
Perfect on {010}
Good on {100}
Fracture:
Irregular/Uneven
Density:
3.03 - 3.04 g/cm3 (Measured) 3.03 g/cm3 (Calculated)
Optical Data of Inesite
Type:
Biaxial (-)
RI values:
nα = 1.609 nβ = 1.636 nγ = 1.644
2V:
Measured: 60° , Calculated: 56°
Max. Birefringence:
δ = 0.035
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 ”m thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 ”m thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v distinct
Optical Extinction:
X ⧠c = 74°; Y ⧠c = 32°; Z ⧠c = 62°.
Chemistry of Inesite
Mindat Formula:
Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Element Weights:
Common Impurities:
Fe,Al,Mg,K
Crystallography of Inesite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.889(2) Å, b = 9.247(2) Å, c = 11.975(3) Å
α = 91.8°, β = 132.58°, γ = 94.37°
α = 91.8°, β = 132.58°, γ = 94.37°
Ratio:
a:b:c = 0.961 : 1 : 1.295
Unit Cell V:
718.04 Ă
Âł (Calculated from Unit Cell)
Z:
1
Morphology:
Slender laths, chisel shaped, fan shaped clusters, fiberous, massive.
Known forms include c{001}, b{010}, a{100}, f{210}, m{110}, M110}, d{011}, g{201}, j{301}, h{311}, e{101}, l{101}, n{301}, o{532}, i{747}, s{946}.
Known forms include c{001}, b{010}, a{100}, f{210}, m{110}, M110}, d{011}, g{201}, j{301}, h{311}, e{101}, l{101}, n{301}, o{532}, i{747}, s{946}.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000669 | Inesite | Wan C, Ghose S (1978) Inesite, a hydrated calcium manganese silicate with five-tetrahedral-repeat double chains American Mineralogist 63 563-571 |  | 1978 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.16 Ă | (100) |
| 2.92 Ă | (80) |
| 2.84 Ă | (80) |
| 2.73 Ă | (70) |
| 2.19 Ă | (60) |
| 4.59 Ă | (50) |
| 4.01 Ă | (50) |
Comments:
Broken Hill, Australia. Data from Ryall and Threadgold (1968).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-? subsurface aqueous alteration (see also #23) |
Geological Setting:
Late stage hydrothermal mineral in manganese deposits.
Type Occurrence of Inesite
General Appearance of Type Material:
Radial aggregates of pink-red crystals up to 2 cm long by 1.5 mm.
Place of Conservation of Type Material:
Mineralogisches Museum, Philipps UniversitÀt Marburg, Germany, number MMM K35/14 (holotype).
Associated Minerals at Type Locality:
Synonyms of Inesite
Other Language Names for Inesite
Dutch:Inesiet
Japanese:ă€ăăčçł
Russian:ĐĐœĐ”Đ·ĐžŃ
Simplified Chinese:çșąçĄ
éé°çż
çșąçĄ éé°çł
çșąçĄ éé°çł
Traditional Chinese:çŽ
çœéŁéłç€Š
çŽ çœéŁéłçł
çŽ çœéŁéłçł
Common Associates
Associations Based on Photo Data:
| 237 photos of Inesite associated with Hubeite | Ca2Mn2+Fe3+Si4O12(OH) · 2H2O |
| 132 photos of Inesite associated with Calcite | CaCO3 |
| 100 photos of Inesite associated with Quartz | SiO2 |
| 68 photos of Inesite associated with Apophyllite Group | AB4[Si8O20]X · 8H2O |
| 50 photos of Inesite associated with Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
| 42 photos of Inesite associated with Natrolite | Na2Al2Si3O10 · 2H2O |
| 30 photos of Inesite associated with Hydroxyapophyllite-(K) | KCa4(Si8O20)(OH,F) · 8H2O |
| 30 photos of Inesite associated with Xonotlite | Ca6(Si6O17)(OH)2 |
| 27 photos of Inesite associated with Prehnite | Ca2Al2Si3O10(OH)2 |
| 27 photos of Inesite associated with Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 9.DL.10 | Piergorite-(Ce) | Ca8(Ce,Th,La,Nd)2(Al0.5Fe3+0.5)(â»,Li,Be)2Si6B8O36(OH,F)2 |
Other Information
Thermal Behaviour:
In a closed tube, gives off water and turns brown.
Notes:
Soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Inesite
mindat.org URL:
https://www.mindat.org/min-2031.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Inesite
Reference List:
Schneider, A. (1887) Verhandlungen der Gesellschaft. Protokoll der November - Sitzung. Ăber neue manganerze aus dem Dillenburgischen. Zeitschrift der Deutschen Geologischen Gesellschaft, 39. 829-855
Ito, Kenzo (1961) Thermal transformation of inesite. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 46 (3) 65-72 doi:10.2465/ganko1941.46.65
Ryall, William R., Threadgold, Ian M. (1966) Evidence for [(SiO3)5]â type chains in inesite as shown by x-ray and infrared absorption studies. American Mineralogist, 51 (5-6) 754-761
Ryall, William R., Threadgold, Ian M. (1968) Inesite from the Broken Hill lode, New South Wales, Australia. American Mineralogist, 53 (9-10) 1614-1634
Wan, Che'ng, Ghose, Subrata (1975) Inesite, Ca2Mn7Si10O28(OH)2·5H2O: A new chain silicate with "FĂŒnferdoppelketten". Die Naturwissenschaften, 62 (2) 96 doi:10.1007/bf00592183
Wan, Che'ng, Ghose, Subrata (1978) Inesite, a hydrated calcium manganese silicate with five-tetrahedral-repeat double chains. American Mineralogist, 63 (5-6) 563-571
Localities for Inesite
Showing 65 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia | |
| McQueen +2 other references |
| Ryall et al. (1968) |
| Ryall et al. (1968) | |
| Ryall et al. (1968) +1 other reference | |
| Ryall et al. (1968) +1 other reference | |
| Fred Rose (employee of drilling company during exploration and original owner of 50 specimens collected from this time) +1 other reference |
| Kim Macdonald |
China | |
| Hawthorne et al. (2002) +1 other reference |
Germany | |
| Glass et al. (1939) |
| Jahrb.Preuss.Geol.Landesanst. (1887) |
Hungary | |
| Koch (1985) |
Indonesia | |
| Leroy et al. (2000) |
| Barton et al. (1978) |
Italy | |
| Balestra (2016) |
| Pipino (1984) |
| Borgo et al. (1988) +1 other reference |
| Ghizzoni et al. (2005) |
Japan | |
| Arribas et al. (2018) |
| J. Kitahara analysis +1 other reference |
| Togari et al. (1986) +2 other references |
| Janet Clifford (2011) |
| Introduction to Japanese Minerals (Geological Survey of Japan, 1970) |
| Janet Clifford (2011) |
| - (n.d.) |
| Yoshimura et al. (1960) |
| Janet Clifford (2011) |
| - (n.d.) |
| - (n.d.) |
| Masutomi Museum specimen (Kyoto) +2 other references |
Mexico | |
| Farrington (1900) +1 other reference |
New Zealand | |
| Brathwaite et al. (2002) +1 other reference |
Norway | |
| Goldschmidt (1911) +1 other reference |
Romania | |
| HĂźrtopanu P. et al. (2022) |
| HĂźrtopanu (1997) +1 other reference |
Slovakia | |
| Clark (1993) |
| Kodě +1 other reference |
South Africa | |
| Rock Currier photo |
| Moore (2001) | |
| Cairncross et al. (1995) | |
| Cairncross et al. (1993) +1 other reference | |
Spain | |
| Calvo Rebollar (2018) |
| Joan Rosell-Riba (2025) | |
| Joan Rosell specimen |
Sweden | |
| Grensman et al. (2001) |
| |
| - (n.d.) +1 other reference |
| Gatedal (n.d.) +1 other reference |
| GFF 15 +1 other reference |
| Flink (1888) +1 other reference |
USA | |
| Murdoch (1966) |
| - (2005) |
| Murdoch (1966) |
| Murdoch (1966) | |
| Trask (1950) +2 other references |
| Murdoch (1966) |
| Murdoch (1966) |
| Huebner +6 other references |
| |
| Trask et al. (1943) +2 other references | |
| Huebner +6 other references |
| Foley +4 other references |
| Cannon (1975) |
| Glass et al. (1939) |
Quick NavTopAbout InesiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Fengjiashan Mine, Daye Co., Huangshi, Hubei, China