Merlinoite
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About Merlinoite
Formula:
(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O
Hardness:
4½
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1977 by Elio Passaglia, D. Pongiluppi, R. Rinaldi in honor of Stefano Merlino (1938 - ), Professor of crystallography, University of Pisa, Italy.
Zeolite Group. Compare UM1990-82-SiO:AlBaCaHKNaSr, UM1990-83-SiO:AlBaCaHKNaSr, UM1990-84-SiO:AlBaCaHKNaSr, and UM2010-05-SiO:AlCaHK.
Possibly an analog of UM1999-33-SiO:AlHKNa.
Possibly an analog of UM1999-33-SiO:AlHKNa.
Classification of Merlinoite
Approved
8/J.25-80
9.GC.15
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
77.1.3.11
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.12.14
16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn
16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn
Physical Properties of Merlinoite
Hardness:
4½ on Mohs scale
Optical Data of Merlinoite
Type:
Biaxial (-)
RI values:
nα = 1.499 nβ = 1.500 nγ = 1.501
2V:
Measured: 56° , Calculated: 88°
Max Birefringence:
δ = 0.002

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
Chemical Properties of Merlinoite
Formula:
(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O
IMA Formula:
K5Ca2(Si23Al9)O64 · 24H2O
Common Impurities:
Fe
Crystallography of Merlinoite
Crystal System:
Orthorhombic
Cell Parameters:
a = 14.11 Å, b = 14.22 Å, c = 9.94 Å
Ratio:
a:b:c = 0.992 : 1 : 0.699
Unit Cell V:
1,994.40 ų (Calculated from Unit Cell)
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) |
---|---|---|---|---|---|---|---|
0014759 | Merlinoite | Galli E, Gottardi G, Pongiluppi D (1979) The crystal structure of the zeolite merlinoite Neues Jahrbuch fur Mineralogie, Monatshefte 1979 1-9 | 1979 | in a vug of a lava from Cupaello, Rieti, Italy | 0 | 293 |
CIF Raw Data - click here to close
Type Occurrence of Merlinoite
Synonyms of Merlinoite
Ba Zeolite (in part)
Other Language Names for Merlinoite
Relationship of Merlinoite to other Species
Member of:
Other Members of this group:
Alflarsenite | NaCa2Be3Si4O13(OH) · 2H2O | Mon. 2 : P21 |
Amicite | K2Na2Al4Si4O16 · 5H2O | Mon. 2 |
Ammonioleucite | (NH4)(AlSi2O6) | Tet. |
Analcime | Na(AlSi2O6) · H2O | Tric. 1 : P1 |
Bellbergite | (K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2O | Hex. |
Bikitaite | LiAlSi2O6 · H2O | Tric. 1 : P1 |
Boggsite | Ca8Na3(Si,Al)96O192 · 70H2O | Orth. mmm (2/m 2/m 2/m) : Imma |
Brewsterite-Ba | (Ba,Sr)[Al2Si6O16] · 5H2O | Mon. 2/m : P21/m |
Brewsterite-Sr | (Sr,Ba,Ca)[Al2Si6O16] · 5H2O | Mon. 2/m : P21/m |
Chabazite-Levyne Subgroup | M[Al2Si4O12] · 6H2O | |
Chiavennite | CaMnBe2Si5O13(OH)2 · 2H2O | Mon. 2/m : P21/b |
Clinoptilolite | M3-6(Si30Al6)O72 · 20H2O | |
Cowlesite | CaAl2Si3O10 · 6H2O | Orth. mmm (2/m 2/m 2/m) |
Dachiardite-Ca | (Ca,Na2,K2)5Al10Si38O96 · 25H2O | Mon. |
Dachiardite-K | K4(Si20Al4O48) · 13H2O | Mon. |
Dachiardite-Na | (Na2,Ca,K2)5Al10Si38O96 · 25H2O | Mon. |
Direnzoite | NaK6MgCa2(Al13Si47O120) · 36H2O | Orth. mmm (2/m 2/m 2/m) : Pmmn |
Edingtonite | Ba[Al2Si3O10] · 4H2O | Orth. 2 2 2 : P21 21 21 |
Epistilbite | CaAl2Si6O16 · 5H2O | Mon. |
Erionite | M2[Al4Si14O36] · 15H2O | |
Faujasite | M3.5[Al7Si17O48] · 32H2O | |
Ferrierite | Zeolite Group. | |
Ferrochiavennite | Ca1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2O | Mon. 2/m : P21/b |
Flörkeite | (K3Ca2Na)[Al8Si8O32] · 12H2O | Tric. 1 : P1 |
Garronite-Ca | Na2Ca5Al12Si20O64 · 27H2O | Tet. 4 2m : I4m2 |
Gaultite | Na4Zn2Si7O18 · 5H2O | Orth. mm2 : Fdd2 |
Gismondine-Ba | Ba2Al4Si4O16 · 4-6H2O | |
Gismondine-Ca | CaAl2Si2O8 · 4H2O | Mon. 2/m : P21/b |
Gmelinite | In 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K. | |
Gobbinsite | Na5(Si11Al5)O32 · 11H2O | Orth. |
Goosecreekite | Ca[Al2Si6O16] · 5H2O | Mon. |
Gottardiite | Na3Mg3Ca5Al19Si117O272 · 93H2O | Orth. |
Heulandite | Heulandite is the name applied to specimens with unknown dominance of the extra-framework cations. | |
Hsianghualite | Ca3Li2(Be3Si3O12)F2 | Iso. 4 3 2 : I41 3 2 |
Kirchhoffite | Cs(BSi2O6) | Tet. 4/mmm (4/m 2/m 2/m) : I41/acd |
Laumontite | CaAl2Si4O12 · 4H2O | Mon. 2/m : B2/m |
Lovdarite | K2Na6Be4Si14O36 · 9H2O | Orth. mm2 |
Maricopaite | Pb7Ca2(Si,Al)48O100 · 32H2O | Orth. |
Martinandresite | Ba2(Al4Si12O32) · 10H2O | Orth. mmm (2/m 2/m 2/m) : Pmmn |
Mazzite-Mg | (Mg,K,Ca)5(Si26Al10)O72 · 28H2O | Hex. |
Mazzite-Na | Na8[Al4Si14O36]2 · 30H2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
Montesommaite | (K,Na)9Al9Si23O64 · 10H2O | Orth. |
Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O | Orth. |
Mutinaite | Na3Ca4Si85Al11O192 · 60H2O | Orth. |
Nabesite | Na2BeSi4O10 · 4H2O | Orth. 2 2 2 : P21 21 21 |
Natrolite Subgroup | A subgroup of the Zeolite Group. | |
Offretite | KCaMg(Si13Al5)O36 · 15H2O | Hex. 6 m2 : P6m2 |
Pahasapaite | Li8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O | Iso. 2 3 : I2 3 |
Parthéite | Ca2(Si4Al4) O15 (OH)2 · 4H2O | Mon. 2/m : B2/b |
Paulingite-Ca | (Ca,K,Na,Ba, ◻)10 (Si, Al)42O84 · 34H2O | Iso. |
Paulingite-K | (K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O | Iso. |
Paulingite-Na | (Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2O | Iso. |
Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O | Hex. |
Phillipsite subgroup | Zeolite Group. | |
Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O | Iso. m3m (4/m 3 2/m) : Ia3d |
Roggianite | Ca2Be(OH)2Al2Si4O13 · 2.5H2O | Tet. |
Stilbite subgroup | M6-7[Al8-9Si27-28O72] · nH2O | |
Terranovaite | (Na,Ca)8(Si68Al12)O160 · 29H2O | Orth. |
Thomsonite-Ca | NaCa2[Al5Si5O20] · 6H2O | Orth. mmm (2/m 2/m 2/m) |
Thomsonite-Sr | Na(Sr,Ca)2[Al5Si5O20] · 7H2O | Orth. mmm (2/m 2/m 2/m) |
Tschernichite | (Ca,Na2)[Al2Si4O12] · 4-8H2O | Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm |
Tschörtnerite | Ca4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2O | Iso. m3m (4/m 3 2/m) : Fm3m |
UM1996-38-SiO:AlCaHNa | Na-Ca-Al-Si-O-H | |
UM1999-33-SiO:AlHKNa | K7Na5Al12Si20O64 · 24H2O | |
UM2002-40-SiO:AlCaHKMgNa | (Mg,Ca,Na,K)7.5(Al12.8Si51.2)O128 · 65H2O | Tet. 4 2 2 : P41 2 2 |
Unnamed (Ca analogue of Merlinoite) | (Ca,K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O ? | |
Wairakite | Ca(Al2Si4O12) · 2H2O | Mon. 2/m |
Weinebeneite | CaBe3(PO4)2(OH)2 · 4H2O | Mon. |
Wenkite | (Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2O | Hex. |
Willhendersonite | KCa[Al3Si3O12] · 5H2O | Tric. |
Yugawaralite | CaAl2Si6O16 · 4H2O | Mon. |
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Merlinoite associated with Montesommaite | (K,Na)9Al9Si23O64 · 10H2O |
3 photos of Merlinoite associated with Baryte | BaSO4 |
1 photo of Merlinoite associated with Phillipsite subgroup |
Related Minerals - Nickel-Strunz Grouping
9.GC.05 | Amicite | K2Na2Al4Si4O16 · 5H2O | Mon. 2 |
9.GC.05 | Garronite-Ca | Na2Ca5Al12Si20O64 · 27H2O | Tet. 4 2m : I4m2 |
9.GC.05 | Gismondine-Ca | CaAl2Si2O8 · 4H2O | Mon. 2/m : P21/b |
9.GC.05 | Gobbinsite | Na5(Si11Al5)O32 · 11H2O | Orth. |
9.GC.10 | Harmotome | (Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O | Mon. 2/m : P21/m |
9.GC.10 | Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O | Mon. 2/m : P21/m |
9.GC.10 | Phillipsite-K | (K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O | Mon. 2/m : P21/m |
9.GC.10 | Phillipsite-Na | (Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O | Mon. |
9.GC.10 | Flörkeite | (K3Ca2Na)[Al8Si8O32] · 12H2O | Tric. 1 : P1 |
9.GC.20 | Mazzite-Mg | (Mg,K,Ca)5(Si26Al10)O72 · 28H2O | Hex. |
9.GC.20 | Mazzite-Na | Na8[Al4Si14O36]2 · 30H2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
9.GC.25 | Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O | Hex. |
9.GC.30 | Boggsite | Ca8Na3(Si,Al)96O192 · 70H2O | Orth. mmm (2/m 2/m 2/m) : Imma |
9.GC.35 | Paulingite-Ca | (Ca,K,Na,Ba, ◻)10 (Si, Al)42O84 · 34H2O | Iso. |
9.GC.35 | Paulingite-K | (K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O | Iso. |
Related Minerals - Dana Grouping (8th Ed.)
77.1.3.1 | Gismondine | Mon. | |
77.1.3.2 | Amicite | K2Na2Al4Si4O16 · 5H2O | Mon. 2 |
77.1.3.3 | Garronite-Ca | Na2Ca5Al12Si20O64 · 27H2O | Tet. 4 2m : I4m2 |
77.1.3.4 | Gobbinsite | Na5(Si11Al5)O32 · 11H2O | Orth. |
77.1.3.5 | Harmotome | (Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O | Mon. 2/m : P21/m |
77.1.3.8 | Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O | Hex. |
77.1.3.9 | Paulingite | ||
77.1.3.10 | Mazzite | ||
77.1.3.12 | Montesommaite | (K,Na)9Al9Si23O64 · 10H2O | Orth. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
16.12.1 | Stronalsite | Na2SrAl4Si4O16 | Orth. |
16.12.2 | Slawsonite | Sr(Al2Si2O8) | Mon. 2/m : P21/b |
16.12.3 | Brewsterite | Mon. | |
16.12.4 | Celsian | Ba(Al2Si2O8) | Mon. 2/m |
16.12.5 | Paracelsian | Ba(Al2Si2O8) | Mon. |
16.12.6 | Cymrite | BaAl2Si2(O,OH)8 · H2O | Mon. |
16.12.7 | Edingtonite | Ba[Al2Si3O10] · 4H2O | Orth. 2 2 2 : P21 21 21 |
16.12.8 | Banalsite | Na2BaAl4Si4O16 | Orth. mm2 : Iba2 |
16.12.9 | Harmotome | (Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O | Mon. 2/m : P21/m |
16.12.10 | Hyalophane | (K,Ba)[Al(Si,Al)Si2O8] | Mon. |
16.12.11 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 | Orth. |
16.12.12 | Armenite | BaCa2Al6Si9O30 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnna |
16.12.13 | Wellsite | (K,Ba,Ca,K2)Al2Si6O16 · 6H2O | Mon. 2/m : P21/m |
16.12.15 | Anandite | (Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2 | Mon. 2/m : B2/b |
16.12.16 | Fraipontite | (Zn,Al)3((Si,Al)2O5)(OH)4 | Mon. |
16.12.17 | Sauconite | Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O | Mon. |
16.12.18 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 | Hex. |
16.12.19 | Hendricksite | KZn3(Si3Al)O10(OH)2 | Mon. 2/m : B2/m |
16.12.20 | Baileychlore | (Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8 | Tric. 1 |
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.
References for Merlinoite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
*The 1998 and 2000 were in our list before, but I can't find anything meaningful when I search for them. And they were not in the RRUFF list. I think they should be removed.
**There are several papers on producting synthethic merlinoite, but I did not include them.
Passaglia, E., Pongiluppi, D., Rinaldi, R. (1977) Merlinoite, a new mineral of the zeolite group. Neues Jahrbuch für Mineralogie, Monatshefte: 355-364.
Fleischer, M., Cabri, L.J. (1978) New mineral names. American Mineralogist: 63: 598-600.
Galli, E., Gottardi, G., Pongiluppi, D. (1979) The crystal structure of the zeolite merlinoite. Neues Jahrbuch für Mineralogie, Monatshefte: 1-9.
Khomyakov, A.P., Kurova, T.A., Muravitskaya, G.N. (1981) Merlinoite (K,Ba)2Al3Si5O16-5H2O, first occurrence in the USSR. Doklady Acad. Nauk SSSR: 256: 172-174. (in Russian)
(1981) Chem Abs: 94: 106675. (abstract for above)
Baturin, S.V., Malinovskii, Yu.A., Bunova, I.B. (1985) Crystal structure of silica-poor merlinoite from the Kola Peninsula. Mineralogicheskii Zhurnal: 7(6): 67-74. (in Russian).
Della Ventura, G., Parodi, G.C., Burragato, F., Mottana, A. (1993) Nuovi dati sulla merlinoite e su zeoliti affini. Rendiconti Lincei: 4: 303-313.
Coombs, D.S., Alberti, A., Armbruster, T., Artioli, G., Colella, C., Galli, E., Grice, J.D., Liebau, F., Mandarino, J.A., Minato, H., Nickel, E.H., Passaglia, E., Peacor, D.R., Quartieri, S., Rinaldi, R., Ross, M., Sheppard, R.A., Tillmanns, E., Vezzalini, G. (1997) Recommended nomenclature for zeolite minerals: report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist: 35: 1571-1606.
Pakhomova, A.S., Armbruster, T., Krivovichev, S.V., Yakovenchuk, V.N. (2014) Dehydration of the zeolite merlinoite from the Khibiny massif, Russia: an in situ temperature-dependent single-crystal X-ray study. European Journal of Mineralogy: 26: 371-380.
Danisi, R.M., Armbruster, T., Nagashima, M. (2015) Structural intergrowth of merlinoite/phillipsite and its temperature-dependent dehydration behaviour: a single-crystal X-ray study. Mineralogical Magazine: 79: 191-203.
Gatta, G.D., Rotiroti, N., Bersani, D., Bellatreccia, F., Ventura. G.D., Rizzato, S. (2015) A multi-methodological study of the (K,Ca)-variety of the zeolite merlinoite. Mineralogical Magazine: 79: 1755-1767.
Internet Links for Merlinoite
mindat.org URL:
https://www.mindat.org/min-2651.html
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Localities for Merlinoite
Locality List




All localities listed without proper references should be considered as questionable.
France | |
| Galli E, Gualtieri AF (2008) Direnzoite, [NaK6MgCa2(Al13Si47O120)·36H2O], a new zeolite from Massif Central (France): Description and crystal structure. American Mineralogist 93: 95–102 |
Germany | |
| Tschernich, R. (1992), Zeolites of the World, p.42 |
| Wittern: "Mineralfundorte in Deutschland", 2001 |
| Betz, V. (2019) Zeolithe und andere Mineralien aus den Vulkaniten des Vogelsberges (Hessen) und ihre Fundorte. Der Aufschluss, 70, 208-260, 109 Abb. |
| |
Iceland | |
| SCHNORRER-KÖHLER, G. (1990): Merlinoit - ein neues Zeolithmineral von der Halbinsel Tjörnes, N-Island.- Der Aufschluss, 41 (H. 5), S. 295-298 |
Italy | |
| Elmar Lackner collection; Russo, M., and Preite, D. (2011) Merlinoite del Monte Somma: alcune precisazioni. Micro, 9, 2-2011, 64-65. |
| Collection of Alex Earl |
| Russo, M., and Punzo, I. (2004) I Minerali del Somma-Vesuvio. AMI Associazione Micro-mineralogica Italiana, Tipografia Fantigrafica s.r.l., Cremona, 320 pp.; Russo, M., and Preite, D. (2011) Merlinoite del Monte Somma: alcune precisazioni. Micro, 9, 2-2011, 64-65. |
| Badham, M. (1997) Merohedral twinning in the zeolite phillipsite and the formation of merlinoite domains. Ph.D. Thesis, Department of Geological Sciences, Queen's University, Kingston, Ontario, Canada, 82 pp.; Russo, M., and Preite, D. (2011) Merlinoite del Monte Somma: alcune precisazioni. Micro, 9, 2-2011, 64-65. |
| Chinellato Matteo |
| Giancarlo Della Ventura, Gian Carlo Parodi, Francesco Burragato, and A. Mottana (1993): Nuovi dati sulla merlinoite e su zeoliti affini. Rendiconti Lincei 4, 303-313. |
| |
| Passaglia, E., Pongiluppi, D., Rinaldi, R. (1977): Merlinoite, a new mineral of the zeolite group, Neues Jahrbuch für Mineralogie, Monatshefte, 1977, 355-364. ; Conticelli, S., D’antonio, M., Pinarelli, L., & Civetta, L. (2002). Source contamination and mantle heterogeneity in the genesis of Italian potassic and ultrapotassic volcanic rocks: Sr–Nd–Pb isotope data from Roman Province and Southern Tuscany. Mineralogy and Petrology, 74(2-4), 189-222. Cundari, A., & Ferguson, A. K. (1991). Petrogenetic relationships between melilitite and lamproite. Contributions to Mineralogy and Petrology, 107(3), 343-357. Isakova, A. T., Panina, L. I., & Stoppa, F. (2017). Genesis of kalsilite melilitite at Cupaello, Central Italy: Evidence from melt inclusions. Petrology, 25(4), 433-447. Sabatini, V. (1903). La pirossenite melilitica di Coppaeli. Boll. R. Com. geol. Ital., 34, 376. Stoppa, F., & Cundari, A. (1995). A new Italian carbonatite occurrence at Cupaello (Rieti) and its genetic significance. Contributions to Mineralogy and Petrology, 122(3), 275-288. Villa, I., Serva, L., & Quercioli, C. (1991). Verso una datazione della lava di Cupaello (Rieti). Plinius, 4, 102-103. |
Russia | |
| PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65. |
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages | |
Spain | |
| Strasser, A., Kirchner, E., (2006): Minerale aus einem Alkali-Basalt-Differentiat vom Risco Famara, Lanzarote, Kanarische Inseln, Der Aufschluss, Vol. 57, 335-338 |
USA | |
| Tschernich, 1992. Zeolites of the World, p.315 |
Monte Somma, Somma-Vesuvius Complex, Naples, Campania, Italy