Rosenhahnite (original) (raw)
A valid IMA mineral species
About RosenhahniteHide
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Colour:
White, beige, colourless, yellow-brown
Name:
Named by Adolf Pabst, E.B. Gross, and J.T Alfors in 1967 in honor of Leo Rosenhahn (1903/4 - 1991), amateur mineralogist from San Anselmo, California, USA.
This page provides mineralogical data about Rosenhahnite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3455:1
3598fdd8-b3b5-486f-95e1-2358546bf192
IMA Classification of RosenhahniteHide
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IMA Formula:
Ca3Si3O8(OH)2
Type description reference:
Classification of RosenhahniteHide
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9.BJ.10
9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
57.1.4.1
57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
1 : Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
14.5.9
14 : Silicates not Containing Aluminum
5 : Silicates of Ca
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rhh | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of RosenhahniteHide
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Transparency:
Transparent, Translucent
Colour:
White, beige, colourless, yellow-brown
Cleavage:
Perfect
Perfect on {001}, good on {100} and {010}.
Density:
2.89(2) g/cm3 (Measured) 2.905 g/cm3 (Calculated)
Comment:
Berman balance. Calculated value is for the ideal formula.
Optical Data of RosenhahniteHide
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RI values:
_n_α = 1.624 - 1.625 _n_β = 1.640 - 1.641 _n_γ = 1.646 - 1.647
2V:
Measured: 64° (4), Calculated: 64°
δ = 0.022
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of RosenhahniteHide
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Mindat Formula:
HCa3[Si3O9(OH)]
Common Impurities:
B,Al,Fe,Mn,Mg,Sr,Ba,Na,H2O
Crystallography of RosenhahniteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 6.955(2) Å, b = 9.484(2) Å, c = 6.812(2) Å
α = 108.64(2)°, β = 94.84(2)°, γ = 95.89(2)°
Ratio:
a:b:c = 0.733 : 1 : 0.718
Unit Cell V:
420.23 ų (Calculated from Unit Cell)
Morphology:
The type crystals are tabular to lathlike with {010} by far the most prominent form. Other forms observed include {001}, {100}, {140}, {110}, {210}, {110}, {210}, {032}, {021}, {031}, {101}, {122}.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000580 | Rosenhahnite | Wan C, Ghose S, Gibbs G V (1977) Rosenhahnite, Ca3Si3O8(OH)2: crystal structure and the stereochemical configuration of the hydroxylated trisilicate group, [Si3O8(OH)2] American Mineralogist 62 503-512 |  |
1977 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.20 Å | (100) |
| 2.965 Å | (90) |
| 3.043 Å | (60) |
| 2.775 Å | (40) |
| 3.36 Å | (30) |
| 2.659 Å | (30) |
| 1.886 Å | (30) |
Geological EnvironmentHide
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Type Occurrence of RosenhahniteHide
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General Appearance of Type Material:
Narrow veinlets less than 3 cm thick with small pockets.
Place of Conservation of Type Material:
California Division of Mines & Geology, San Francisco, California, USA.
National Museum of Natural History (Smithsonian), Washington, D.C., USA 120124, 134562.
The Natural History Museum, London England, 1976,392-393.
Geological Setting of Type Material:
Veins in brecciated, fine-grained diopside-garnet metasedimentary rock.
Associated Minerals at Type Locality:
Reference:
Pabst, A., Gross, E.B., Alfors, J.T. (1967) Rosenhahnite, a new hydrous calcium silicate from Mendocino County, California. American Mineralogist: 52: 336-351.
Synonyms of RosenhahniteHide
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Other Language Names for RosenhahniteHide
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Related Minerals - Strunz-mindat GroupingHide
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| 9.BJ. | Arsenmedaite | Mn2+6 As5+Si5O18(OH) | Mon. 2/m |
|---|---|---|---|
| 9.BJ.05 | Orientite | Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.15 | Trabzonite | Ca4(Si3O9)(OH)2 | Orth. m _m_2 : A m _a_2 |
| 9.BJ.20 | Thalénite-(Y) | Y3Si3O10F | Mon. |
| 9.BJ.25 | Tiragalloite | Mn2+4As5+Si3O12(OH) | Mon. 2/m |
| 9.BJ.30 | Medaite | Mn2+6V5+Si5O18(OH) | Mon. 2/m |
| 9.BJ.35 | Ruizite | Ca2Mn3+2[Si4O11(OH)2](OH)2 · 2H2O | Mon. 2 |
| 9.BJ.35 | Taniajacoite | SrCaMn3+2Si4O11(OH)4 · 2H2O | Tric. 1 |
| 9.BJ.35 | Strontioruizite | Sr2Mn3+2Si4O11(OH)4 · 2H2O | Mon. 2 : _B_2 |
| 9.BJ.40 | Ardennite-(As) | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.40 | Ardennite-(V) | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.40 | Kannanite | Ca4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.40 | Alpeite | Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.BJ.45 | Kilchoanite | Ca6(SiO4)(Si3O10) | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.BJ.50 | Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.50 | Prismatine | (◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22 | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.55 | Zunyite | Al13Si5O20(OH,F)18Cl | Iso. 43_m_ : F_43_m |
| 9.BJ.60 | Hubeite | Ca2Mn2+Fe3+Si4O12(OH) · 2H2O | Tric. 1 : _P_1 |
| 9.BJ.65 | Cassagnaite | (Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8 | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.BJ.70 | Pavlovskyite | Ca8(SiO4)2(Si3O10) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
Fluorescence of RosenhahniteHide
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Fluoresces light orangish pink under LW UV.
Other InformationHide
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Notes:
Slightly soluble in concentrated 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 RosenhahniteHide
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References for RosenhahniteHide
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Reference List:
Localities for RosenhahniteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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