Sanidine
A valid IMA mineral species - grandfathered
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About Sanidine
Formula:
K(AlSi3O8)
Colour:
Colourless, white, grey, yellowish white, or reddish white
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.56 - 2.62
Crystal System:
Monoclinic
Member of:
Name:
From the Greek "sanis" for "little plate" and "idos" for "to see."
Type Locality:
Polymorph of:
Feldspar Group.
The high-temperature, fully disordered (in its Al and Si distribution), form of K-feldspar; other potassium-dominant feldspars are microcline (fully ordered) and orthoclase (partly ordered). It is metastable at room temperature, and can revert to orthoclase over long geological periods.
It forms an (alkali feldspar) series at high temperature with high albite. Petrologically, intermediates in this series from 10% up to 36% K-feldspar were termed anorthoclase, and anything from 36 - 100% K-feldspar was termed sanidine, even where Na>K. With current classifications, the name anorthoclase is discontinued and the intermediates should be called either albite (if Na>K) or sanidine (if K>Na).
It is common in many potassic volcanic rocks, some high level intrusive rocks and other high-temperature rocks like buchites.
The Fe analogue, UM1993-23-SiO:AlFeK, is now IMA-approved as ferrisanidine.
The high-temperature, fully disordered (in its Al and Si distribution), form of K-feldspar; other potassium-dominant feldspars are microcline (fully ordered) and orthoclase (partly ordered). It is metastable at room temperature, and can revert to orthoclase over long geological periods.
It forms an (alkali feldspar) series at high temperature with high albite. Petrologically, intermediates in this series from 10% up to 36% K-feldspar were termed anorthoclase, and anything from 36 - 100% K-feldspar was termed sanidine, even where Na>K. With current classifications, the name anorthoclase is discontinued and the intermediates should be called either albite (if Na>K) or sanidine (if K>Na).
It is common in many potassic volcanic rocks, some high level intrusive rocks and other high-temperature rocks like buchites.
The Fe analogue, UM1993-23-SiO:AlFeK, is now IMA-approved as ferrisanidine.
Visit gemdat.org for gemological information about Sanidine.
Unique Identifiers
Mindat ID:
3521
Long-form identifier:
mindat:1:1:3521:3
GUID
(UUID V4):
(UUID V4):
04018236-c69a-4310-af36-20dd2f6038ed
IMA Classification of Sanidine
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Sanidine
9.FA.30
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.1.2
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.3.7
16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K
16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K
Mineral Symbols
As of 2021 there are now IMAβCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Sa | IMAβCNMNC | Warr, L.N. (2021). IMAβCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Sa | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277β279. |
Sa | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Sa | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185β187 doi:10.2138/am.2010.3371 |
Sa | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Sa | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261β264 doi:10.1180/clm.2020.30 |
Physical Properties of Sanidine
Vitreous
Transparency:
Transparent, Translucent
Colour:
Colourless, white, grey, yellowish white, or reddish white
Streak:
White
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{001} Perfect, {010} distinct
{001} Perfect, {010} distinct
Parting:
{100}
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.56 - 2.62 g/cm3 (Measured) 2.56 g/cm3 (Calculated)
Optical Data of Sanidine
Type:
Biaxial (-)
RI values:
nα = 1.518 - 1.525 nβ = 1.523 - 1.530 nγ = 1.525 - 1.531
2V:
Measured: 60° , Calculated: 48° to 64°
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v distinct
Optical Extinction:
Y = b; Z β§ c β -20Β° (low); Z = b; Y β§ c β -21Β° (high).
Chemistry of Sanidine
Mindat Formula:
K(AlSi3O8)
Elements listed:
Common Impurities:
Fe,Ca,Na,H2O
Age distribution
Recorded ages:
Phanerozoic : 112 Β± 2 Ma to 0.00129 Β± 0.00056 Ma - based on 102 recorded ages.
Crystallography of Sanidine
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 8.603(2) Å, b = 13.036(4) Å, c = 7.174(2) Å
β = 116.03(2)°
β = 116.03(2)°
Ratio:
a:b:c = 0.66 : 1 : 0.55
Unit Cell V:
722.94 Γ
Β³ (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular with square cross section
Twinning:
Carlsbad - common
Baveno, Manebach - rarer
Baveno, Manebach - rarer
Comment:
High sanidine (forms a series with high albite).
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0000781 | Sanidine | Viswanathan K, Brandt K (1980) The crystal structure of ternary (Ba,K,Na)-feldspar and its significance American Mineralogist 65 472-476 | 1980 | Otjosondu, Namibia | 0 | 293 | |
0020567 | Sanidine | Deubener J, Sternitzke M, Mueller G (1991) Feldspars MAlSi3O8 (M=H,Li,Ag) synthesized by low-temperature ion exchange American Mineralogist 76 1620-1627 | 1991 | Volkesfeld, Eifel, Germany | 0 | 293 | |
0000312 | Sanidine | Phillips M W, Ribbe P H (1973) The structures of monoclinic potassium-rich feldspars American Mineralogist 58 263-270 | 1973 | Laacher See, Eifel District, Germany | 0 | 293 | |
0000695 | Sanidine | Keefer K D, Brown G E (1978) Crystal structure and composition of sanidine and high albite in cryptoperthitic intergrowth Note this sample of feldspar is from the Rabb Canyon pegmatite, Grant County, New Mexico, USA American Mineralogist 63 1264-1273 | 1978 | 0 | 293 | ||
0001125 | Sanidine | Scambos T A, Smyth J R, McCormick T C (1987) Crystal-structure refinement of high sanidine from the upper mantle American Mineralogist 72 973-978 | 1987 | 0 | 293 | ||
0005270 | Sanidine | Ferguson R B, Ball N A, Cerny P (1991) Structure refinement of an adularian end-member high sanidine from the Buck Claim Pegmatite, Bernic Lake, Manitoba The Canadian Mineralogist 29 543-552 | 1991 | Buck Claim Pegmatite, Bernic Lake, Manitoba, Canada | 0 | 293 | |
0005271 | Sanidine | Ferguson R B, Ball N A, Cerny P (1991) Structure refinement of an adularian end-member high sanidine from the Buck Claim Pegmatite, Bernic Lake, Manitoba The Canadian Mineralogist 29 543-552 | 1991 | Buck Claim Pegmatite, Bernic Lake, Manitoba, Canada | 0 | 293 | |
0005272 | Sanidine | Ferguson R B, Ball N A, Cerny P (1991) Structure refinement of an adularian end-member high sanidine from the Buck Claim Pegmatite, Bernic Lake, Manitoba The Canadian Mineralogist 29 543-552 | 1991 | Buck Claim Pegmatite, Bernic Lake, Manitoba, Canada | 0 | 293 | |
0005273 | Sanidine | Ferguson R B, Ball N A, Cerny P (1991) Structure refinement of an adularian end-member high sanidine from the Buck Claim Pegmatite, Bernic Lake, Manitoba The Canadian Mineralogist 29 543-552 | 1991 | Buck Claim Pegmatite, Bernic Lake, Manitoba, Canada | 0 | 293 | |
0006421 | Sanidine | Kroll H, Flogel J, Breit U, Lons J, Pentinghaus H (1991) Order and anti-order in Ge-substituted alkali feldspars European Journal of Mineralogy 3 739-749 | 1991 | 0 | 293 | ||
0006587 | Sanidine | Kimata M, Saito S, Shimizu M (1995) Structure of sanidine-type KGaSi3O8: Tetrahedral-site disordering in potassium feldspar European Journal of Mineralogy 7 287-293 | 1995 | 0 | 293 | ||
0006610 | Sanidine | Kimata M, Shimizu M, Saito S (1996) High-temperature crystal structure of sanidine Part II. The crystal structure of sanidine at 935 C European Journal of Mineralogy 8 15-24 | 1996 | 0 | 293 | ||
0006611 | Sanidine | Kimata M, Shimizu M, Saito S (1996) High-temperature crystal structure of sanidine Part II. The crystal structure of sanidine at 935 C European Journal of Mineralogy 8 15-24 | 1996 | 0 | 293 | ||
0007255 | Sanidine | Menna M, Tribaudino M, Renzulli A (2008) Al-Si order and spinodal decomposition texture of sanidine from igneous clasts of Stromboli (southern Italy): insights into the timing between the emplacement of a shallow basic sheet intrusion and the eruption of related ejecta European Journal of Mineralogy 20 183-190 | 2008 | Stromboli volcano, southern Italy | 0 | 293 | |
0020508 | Sanidine | Angel R J, Ross N L, Zhao J, Sochalski-Kolbus L, Kruger H, Schmidt B C (2013) Structural controls on the anisotropy of tetrahedral frameworks: the example of monoclinic feldspars European Journal of Mineralogy 25 597-614 | 2013 | Unknown | 0 | 293 | |
0020554 | Sanidine | Angel R J, Ross N L, Zhao J, Sochalski-Kolbus L, Kruger H, Schmidt B C (2013) Structural controls on the anisotropy of tetrahedral frameworks: the example of monoclinic feldspars European Journal of Mineralogy 25 597-614 | 2013 | Synthetic | 0 | 293 | |
0020555 | Sanidine | Angel R J, Ross N L, Zhao J, Sochalski-Kolbus L, Kruger H, Schmidt B C (2013) Structural controls on the anisotropy of tetrahedral frameworks: the example of monoclinic feldspars European Journal of Mineralogy 25 597-614 | 2013 | Synthetic | 0 | 293 | |
0020563 | Sanidine | Ribbe P H (1963) A refinement of the crystal structure of sanidinised orthoclase Acta Crystallographica 16 426-427 | 1963 | Unknown | 0 | 293 | |
0018087 | Sanidine | Taylor W (1933) The structure of sanidine and other feldspars 2.56 _cod_database_code 1011224 Zeitschrift fur Kristallographie 85 425-442 | 1933 | 0 | 293 | ||
0018062 | Sanidine | Taylor W (1934) The structure of sanidine and other felspars _cod_database_code 1011187 Zeitschrift fur Kristallographie 87 464-481 | 1934 | 0 | 293 | ||
0010740 | Sanidine | Weitz G (1972) Die struktur des saninins bei verschiedenen ordnungsgraden Zeitschrift fur Kristallographie 136 418-426 | 1972 | Volkesfeld, Eifel | 0 | 293 | |
0010741 | Sanidine | Weitz G (1972) Die struktur des saninins bei verschiedenen ordnungsgraden Zeitschrift fur Kristallographie 136 418-426 | 1972 | Volkesfeld, Eifel | 0 | 293 | |
0020564 | Sanidine | Ohashi Y, Finger LW (1974) Refinement of the crystal structure of sanidine at 25 and 400C Carnegie Institution of Washington: Yearbook 73 539-544 | 1974 | Laacher See, Eifel District, Germany | 0 | 298 | |
0020565 | Sanidine | Ohashi Y, Finger LW (1974) Refinement of the crystal structure of sanidine at 25 and 400C Carnegie Institution of Washington: Yearbook 73 539-544 | 1974 | Laacher See, Eifel District, Germany | 0 | 673 | |
0020566 | Sanidine | Ohashi Y, Finger LW (1975) An effect of temperature on the feldspar structure: crystal structure of sanidine at 800C Carnegie Institution of Washington: Yearbook 74 569-572 | 1975 | Laacher See, Eifel District, Germany | 0 | 1073 | |
0020570 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 293 | |
0020571 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 293 | |
0020572 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 293 | |
0020573 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 923 | |
0020574 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1023 | |
0020575 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1123 | |
0020576 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1123 | |
0020577 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1323 | |
0020578 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1223 | |
0020579 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1223 | |
0020580 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1323 | |
0020581 | Sanidine | Gering E (1985) Silizium/Aluminium-Ordnung und Kristallperfektion von Sanidinen Dissertation Kernforshungszentrum Karlsruhe 1 1-97 | 1985 | Madagascar | 0 | 1323 | |
0012862 | Sanidine | Gualtieri A F (2000) Accuracy of XRPD QPA using the combined Rietveld-RIR method Journal of Applied Crystallography 33 267-278 | 2000 | Latera, Viterbo, Italy | 0 | 293 | |
0020560 | Sanidine | Kimata M, Saito S, Shimizu M, Iida I, Matsui T (1996) Low-temperature structures of orthoclase and sanidine Neues Jahrbuch fur Mineralogie, Abhandlungen 171 199-213 | 1996 | Volkesfeld, Eifel, Germany | 0 | 121 | |
0020561 | Sanidine | Kimata M, Saito S, Shimizu M, Iida I, Matsui T (1996) Low-temperature structures of orthoclase and sanidine Neues Jahrbuch fur Mineralogie, Abhandlungen 171 199-213 | 1996 | Volkesfeld, Eifel, Germany | 0 | 293 | |
0020562 | Sanidine | Onorato E, Penta M, Sgarlata F (1963) Struttura del Sanidino Periodico di Mineralogia 32 1-34 | 1963 | Alban Hills, Rome Province, Latium, Italy | 0 | 293 | |
0020557 | Sanidine | Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H (2004) Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar: A combined neutron- and X-ray single-crystal diffraction study Schweizerische Mineralogische und Petrographische Mitteilungen 84 345-354 | 2004 | Itrongay, Madagascar | 0 | 293 | |
0020558 | Sanidine | Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H (2004) Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar: A combined neutron- and X-ray single-crystal diffraction study Schweizerische Mineralogische und Petrographische Mitteilungen 84 345-354 | 2004 | Itrongay, Madagascar | 0 | 293 | |
0020559 | Sanidine | Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H (2004) Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar: A combined neutron- and X-ray single-crystal diffraction study Schweizerische Mineralogische und Petrographische Mitteilungen 84 345-354 | 2004 | Itrongay, Madagascar | 0 | 293 | |
0020556 | Sanidine | Brown G E, Hamilton W C, Prewitt C T, Sueno S (1974) Neutron diffraction study of Al/Si ordering in sanidine: a comparison with X-ray diffraction data The Feldspars: Proceedings of a NATO Advanced Study Institute 68-80 | 1974 | Laacher See, Eifel District, Germany | 0 | 293 | |
0020568 | Sanidine | Marcille I M, Organova N I, Rozhdestvenskaya I V (1993) Verification of the crystalline structure for sanidines Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 2 85-89 | 1993 | Khibiny Massif, Kola Peninsula, Russia | 0 | 293 | |
0020569 | Sanidine | Marsii I M, Organova N I, Rozhdestvenskaya I V (1993) Verification of the crystalline structure for sanidines Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 2 85-89 | 1993 | Mongolia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.326 Γ | (100) |
3.284 Γ | (60) |
3.788 Γ | (57) |
4.235 Γ | (53) |
3.225 Γ | (52) |
2.584 Γ | (35) |
3.458 Γ | (31) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
5 : Primary asteroid phases | 4.566β4.560 |
Stage 3a: Earthβs earliest Hadean crust | >4.50 |
8 : Mafic igneous rocks | |
9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
10 : Basalt-hosted zeolite minerals | |
Stage 4a: Earthβs earliest continental crust | >4.4-3.0 |
19 : Granitic intrusive rocks | |
20 : Acidic volcanic rocks | |
Near-surface Processes | |
24 : Authigenic minerals in terrestrial sediments (see also #17) | |
26 : Hadean detrital minerals | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks | |
36 : Carbonatites, kimberlites, and related igneous rocks | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
39 : High-π metamorphism (blueschist, eclogite, ultrahigh π facies) | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
50 : Coal and/or oil shale minerals | <0.36 |
Stage 10b: Anthropogenic minerals | <10 Ka |
54 : Coal and other mine fire minerals (see also #51 and #56) |
Geological Setting:
Acidic volcanic rocks
Type Occurrence of Sanidine
Synonyms of Sanidine
Other Language Names for Sanidine
Finnish:Sanidiini
German:Sanidin
Glasiger Feldspath
GrΓ€nzerit
Rhyacolit
Riacolit
Rhyakolith (in part)
Ryakolith (in part)
Glasiger Feldspath
GrΓ€nzerit
Rhyacolit
Riacolit
Rhyakolith (in part)
Ryakolith (in part)
Hebrew:Χ‘Χ ΧΧΧΧ
Italian:Sanidino
Japanese:γ΅γγγ£γ³
Portuguese:Sanidina
Russian:Π‘Π°Π½ΠΈΠ΄ΠΈΠ½
Simplified Chinese:ιιΏη³
Spanish:GrΓ€nzerita
Rhyacolita
Riacolita
Rhyacolita
Riacolita
Traditional Chinese:ιι·η³
Varieties of Sanidine
Azulicite | A transparent blue iridescent variety of Sanidine. |
Barium-Sanidine | A barian Sanidine variety with 5% BaO. Originally described from Comb Butte, Highwood Mts, Chouteau Co., Montana, USA. |
Citron Feldspar | A trade name for yellow gem-quality sanidine feldspar as found in Madagascar. |
High sanidine | The high-temperature form of sanidine, believed to be stable above 800°C. |
Low sanidine | The low temperature form of sanidine, believed to be stable between 650°C and 800°C. Above this temperature high sanidine is formed, and below this orthoclase and microcline. |
Relationship of Sanidine to other Species
Member of:
Other Members of this group:
Microcline | K(AlSi3O8) | Tric. 1 |
Orthoclase | K(AlSi3O8) | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
88 photos of Sanidine associated with Pseudobrookite | Fe2TiO5 |
75 photos of Sanidine associated with Titanite | CaTi(SiO4)O |
74 photos of Sanidine associated with Hematite | Fe2O3 |
49 photos of Sanidine associated with HaΓΌyne | Na3Ca(Si3Al3)O12(SO4) |
42 photos of Sanidine associated with Magnetite | Fe2+Fe3+2O4 |
39 photos of Sanidine associated with Zircon | Zr(SiO4) |
37 photos of Sanidine associated with Quartz | SiO2 |
35 photos of Sanidine associated with Pyroxene Group | ADSi2O6 |
29 photos of Sanidine associated with Enstatite | Mg2Si2O6 |
25 photos of Sanidine associated with Nosean | Na8(Al6Si6O24)(SO4) Β· H2O |
Related Minerals - Strunz-mindat Grouping
9.FA. | Hexacelsian | BaAl2Si2O8 |
9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
9.FA.05 | Kaliophilite | KAlSiO4 |
9.FA.05 | Kalsilite | KAlSiO4 |
9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
9.FA.05 | Panunzite | (K,Na)AlSiO4 |
9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
9.FA.05 | Carnegieite | NaAlSiO4 |
9.FA.05 va | Germanate-nepheline | (Na,K)AlGeO4 |
9.FA.05 | Megakalsilite | KAlSiO4 |
9.FA.05 | Trinepheline | NaAlSiO4 |
9.FA.05 | Davidsmithite | (Ca,β»)2Na6Al8Si8O32 |
9.FA.10 | Malinkoite | NaBSiO4 |
9.FA.15 | Virgilite | LiAlSi2O6 |
9.FA.25 | Lisitsynite | KBSi2O6 |
9.FA.30 | Buddingtonite | (NH4)(AlSi3O8) |
9.FA.30 | Celsian | Ba(Al2Si2O8) |
9.FA.30 | Microcline | K(AlSi3O8) |
9.FA.30 | Orthoclase | K(AlSi3O8) |
9.FA.30 | Rubicline | Rb(AlSi3O8) |
9.FA.30 va | Germanate-celsian | BaAl2Ge2O8 |
9.FA.30 | Monalbite | NaAlSi3O8 |
9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
9.FA.35 | Albite | Na(AlSi3O8) |
9.FA.35 | Anorthite | Ca(Al2Si2O8) |
9.FA.35 | Reedmergnerite | NaBSi3O8 |
9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
9.FA.45 | Svyatoslavite | Ca(Al2Si2O8) |
9.FA.45 | Kumdykolite | Na(AlSi3O8) |
9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
9.FA.55 | Lisetite | CaNa2Al4Si4O16 |
9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
9.FA.65 | Danburite | CaB2Si2O8 |
9.FA.65 | Maleevite | BaB2Si2O8 |
9.FA.65 | Pekovite | SrB2Si2O8 |
9.FA.70 | StΓΆfflerite | CaAl2Si2O8 |
9.FA.70 | Lingunite | (Na,Ca)AlSi3O8 |
9.FA.70 | Liebermannite | KAlSi3O8 |
9.FA.75 | Kokchetavite | K(AlSi3O8) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Sanidine in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Sanidine
mindat.org URL:
https://www.mindat.org/min-3521.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Sanidine
Reference List:
Localities for Sanidine
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
β - 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Quick NavTopAbout SanidineUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Age distributionCrystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesVarietiesRelationshipsCommon AssociatesStrunz-MindatOther InformationSanidine in petrologyInternet Links References Localities Locality List
Tre Croci, Vetralla, Viterbo Province, Lazio, Italy