Classification of Cuspidine |
| IMA status: | Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" |
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| Strunz 8th edition ID: | 8/C.11-05
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| Nickel-Strunz 10th (pending) edition ID: | 9.BE.17
9 : SILICATES (Germanates) B : Sorosilicates E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination |
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| Dana 8th edition ID: | 56.2.4.3
56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O 2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination |
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| Hey's CIM Ref.: | 17.1.15
17 : Silicates Containing other Anions 1 : Silicates with fluoride (not containing Al) |
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| mindat.org URL: | http://www.mindat.org/min-1198.html Please feel free to link to this page. |
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Type Occurrence of Cuspidine |
| Type Locality: | Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy |
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| Year of Discovery: | 1876 |
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Physical Properties of Cuspidine |
| Hardness (Mohs): | 5 - 6 |
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Crystallography of Cuspidine |
| Crystal System: | Monoclinic |
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| Cell Parameters: | a = 10.93Å, b = 10.57Å, c = 7.57Å β = 110.11° |
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| Ratio: | a:b:c = 1.034 : 1 : 0.716 |
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| Unit Cell Volume: | V 821.24 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | Image Loading

Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
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Optical Data of Cuspidine |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.586 - 1.592 nβ = 1.595 - 1.596 nγ = 1.598 - 1.606 |
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| 2V: | Measured: 63° , Calculated: 58° to 66° |
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| Maximum Birefringence: | δ = 0.012 - 0.014
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Dispersion: | r > v distinct |
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Chemical Properties of Cuspidine |
| Formula: | |
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| Essential elements: | Ca, F, O, Si |
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| All elements listed in formula: | Ca, F, H, O, Si |
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| Common Impurities: | Mn,Na,K,Cl |
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Relationship of Cuspidine to other Species |
| Related to: | Cuspidine Group |
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| Related Minerals - Nickel-Strunz Grouping): | | 9.BE.02 | Wadsleyite | | | 9.BE.05 | Hennomartinite | | | 9.BE.05 | Lawsonite | | | 9.BE.05 | Noelbensonite | | | 9.BE.05 | Itoigawaite | | | 9.BE.07 | Ilvaite | | | 9.BE.07 | Manganilvaite | | | 9.BE.10 | Suolunite | | | 9.BE.12 | Jaffeite | | | 9.BE.15 | Fresnoite | | | 9.BE.17 | Baghdadite | | | 9.BE.17 | Burpalite | | | 9.BE.17 | Hiortdahlite | | (Ca,Na) | | (Zr,Ti)Si | | O | | (O,OH,F) | | |
| | 9.BE.17 | Janhaugite | | (Na,Ca) | | (Mn,Fe) | | (Ti,Zr,Nb) | | Si | | O | | (OH,F,O) | | |
| | 9.BE.17 | Låvenite | | (Na,Ca) | | (Mn | | ,Fe | | )(Zr,Ti)[(O,OH,F) | | |Si | | O | | ] |
| | 9.BE.17 | Niocalite | | | 9.BE.17 | Normandite | | NaCa(Mn,Fe)(Ti,Nb,Zr)[(O,F) | | |Si | | O | | ] |
| | 9.BE.17 | Wöhlerite | | NaCa | | (Zr,Nb)[(O,OH,F) | | |Si | | O | | ] |
| | 9.BE.17 | Hiortdahlite I | | | 9.BE.17 | IMA2005-005a | | | 9.BE.20 | Mosandrite | | (Ca,Na,Ce) | | (Ti,Zr) | | [F | | |(OH) | | |SiO | | |(Si | | O | | ) | | ] |
| | 9.BE.20 | Nacareniobsite-(Ce) | | Na | | Ca | | (Ce,La,Nd)Nb[F | | |O|(Si | | O | | ) | | ] |
| | 9.BE.20 | Rinkite | | Na(Na,Ca) | | (Ca,Ce) | | Ti[F | | |(O,F) | | |(Si | | O | | ) | | ] |
| | 9.BE.22 | Götzenite | | | 9.BE.22 | Hainite | | | 9.BE.22 | Rosenbuschite | | | 9.BE.22 | Kochite | | (Na,Ca) | | Ca | | (Mn,Ca)ZrTi[(F,O) | | |(Si | | O | | ) | | ] |
| | 9.BE.23 | Dovyrenite | | | 9.BE.25 | Barytolamprophyllite | | (Ba,Na) | | (Na,Ti,Fe | | ) | | Ti | | [O|(OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Ericssonite | | | 9.BE.25 | Lamprophyllite | | (Sr,K,Ba) | | (Na,Ti,Mn | | ,Fe | | ) | | Ti | | [O|(O,OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Orthoericssonite | | | 9.BE.25 | Seidozerite | | | 9.BE.25 | Nabalamprophyllite | | Na | | (Ba,Na) | | Ti | | [O|(OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Grenmarite | | (Zr,Mn) | | (Zr,Ti)(Mn,Na)(Na,Ca) | | (Si | | O | | ) | | (O,F) | | |
| | 9.BE.27 | Murmanite | | | 9.BE.30 | Epistolite | | | 9.BE.32 | Lomonosovite | | | 9.BE.35 | Vuonnemite | | | 9.BE.37 | Sobolevite | | Na | | Ca(NaCaMn)Ti | | (Si | | O | | ) | | (PO | | ) | | O | | F | | |
| | 9.BE.40 | Innelite | | Na | | (Ba,K) | | (Mg,Ca,Fe)Ti | | Si | | O | | (OH,F) | | SO | | |
| | 9.BE.40 | Phosphoinnelite | | Ba | | Na | | Ti | | [(O,F) | | |(PO | | ,SO | | ) | | |Si | | O | | ] |
| | 9.BE.42 | Yoshimuraite | | | 9.BE.45 | Quadruphite | | | 9.BE.47 | Polyphite | | | 9.BE.50 | Bornemanite | | | 9.BE.50 | Shkatulkaite | | Na | | Mn | | Ti | | Nb | | [(OH) | | |F|(Si | | O | | ) | | ] · 12H | | O |
| | 9.BE.50 | Shkatulkalite | | | 9.BE.50 | Bykovaite | | BaNa(Na,Ti) | | [(OH,F) | | |(Ti,Nb) | | Si | | O | | (O,OH) | | ] · 3H | | O |
| | 9.BE.55 | Bafertisite | | Ba(Fe | | ,Mn | | ) | | Ti[O|(O,OH) | | |Si | | O | | ] |
| | 9.BE.55 | Hejtmanite | | Ba(Mn | | ,Fe | | ) | | Ti[O|(OH,F) | | |Si | | O | | ] |
| | 9.BE.55 | Nechelyustovite | | (Ba,Na) | | {(Na,Ti,Mn) | | [(Ti,Nb) | | (OH) | | Si | | O | | ](OH,O,F) | | } · 3H | | O |
| | 9.BE.60 | Delindeite | | (Na,K) | | (Ba,Ca) | | (Ti,Fe,Al) | | Si | | O | | (OH) | | |
| | 9.BE.65 | Bussenite | | | 9.BE.67 | Jinshajiangite | | (Na,Ca)(Ba,K)(Fe,Mn) | | Ti | | Si | | O | | (F,O,OH) | | |
| | 9.BE.67 | Perraultite | | (Na,Ca)(Ba,K)(Mn,Fe) | | (Ti,Nb) | | Si | | O | | (OH,F,O) | | |
| | 9.BE.67 | Surkhobite | | (Ba,K) | | CaNaMn | | Ti | | (Si | | O | | ) | | O | | (F,OH,O) | | |
| | 9.BE.70 | Karnasurtite-(Ce) | | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P) | | O | | (OH) | | ·3H | | O |
| | 9.BE.70 | Perrierite-(Ce) | | (Ce,Ca,Th) | | (Mg,Fe | | ) | | (Ti,Fe | | ) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Strontiochevkinite | | (Sr,La,Ce,Ca) | | Fe | | (Ti,Zr) | | Ti | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Chevkinite-(Ce) | | (Ce,La,Ca,Na,Th) | | (Fe | | ,Mg)(Fe | | ,Ti,Fe | | ) | | (Ti,Fe | | ,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Polyakovite-(Ce) | | (Ce,Ca) | | (Mg,Fe | | )(Cr | | ,Fe | | ) | | (Ti,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Rengeite | | | 9.BE.70 | Matsubaraite | | | 9.BE.70 | Dingdaohengite-(Ce) | | | 9.BE.70 | Maoniupingite-(Ce) | | (REE,Ca) | | (Fe | | ,Ti,Fe | | ,[])(Ti,Fe | | ,Fe | | ,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Perrierite-(La) | | (La,Ce, Ca) | | (Fe,Mn | | ,Mg)(Ti,Fe) | | [O | | |Si | | O | | ] | | |
| | 9.BE.72 | Fersmanite | | | 9.BE.75 | Belkovite | | | 9.BE.77 | Nasonite | | | 9.BE.80 | Kentrolite | | | 9.BE.80 | Melanotekite | | | 9.BE.82 | Tilleyite | | | 9.BE.85 | Killalaite | | | 9.BE.87 | Stavelotite-(La) | | (La,Nd,Ca) | | Mn | | Cu(Mn | | ,Fe | | ,Mn | | ) | | [O | | |Si | | O | | ] | | |
| | 9.BE.90 | Biraite-(Ce) | |
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| Related Minerals - Hey's Index Grouping: | | 17.1.1 | Hectorite | | | 17.1.3 | Agrellite | | | 17.1.4 | Apophyllite-(NaF) | | | 17.1.5 | Apophyllite-(KF) | | | 17.1.6 | Apophyllite-(KOH) | | | 17.1.7 | Hsianghualite | | | 17.1.8 | Leucophanite | | (Ca,Na) | | (Be,Al)[Si | | O | | (F,OH)] |
| | 17.1.9 | Norbergite | | | 17.1.10 | Chondrodite | | | 17.1.11 | Humite | | | 17.1.12 | Clinohumite | | | 17.1.13 | Canasite | | | 17.1.14 | Charoite | | (K,Na) | | (Ca,Ba,Sr) | | (Si | | O | | ) | | (Si | | O | | )(OH,F)·H | | O |
| | 17.1.16 | Bultfonteinite | | | 17.1.17 | Zeophyllite | | | 17.1.18 | Rowlandite-(Y) | | | 17.1.19 | Yuksporite | | (K,Ba)NaCa | | (Si,Ti) | | O | | (F,OH)·H | | O |
| | 17.1.20 | Yftisite-(Y) | | (Y,Dy,Er) | | (Ti,Sn)O(SiO | | ) | | (F,OH) | | |
| | 17.1.21 | Mosandrite | | (Ca,Na,Ce) | | (Ti,Zr) | | [F | | |(OH) | | |SiO | | |(Si | | O | | ) | | ] |
| | 17.1.22 | Hiortdahlite | | (Ca,Na) | | (Zr,Ti)Si | | O | | (O,OH,F) | | |
| | 17.1.23 | Burpalite | | | 17.1.24 | Seidozerite | | | 17.1.25 | Thorosteenstrupine | | | 17.1.26 | Zircophyllite | | (K,Na) | | (Mn,Fe | | ) | | (Zr,Ti) | | Si | | O | | (O,OH,F) | | |
| | 17.1.27 | Jinshajiangite | | (Na,Ca)(Ba,K)(Fe,Mn) | | Ti | | Si | | O | | (F,O,OH) | | |
| | 17.1.28 | Rosenbuschite | | | 17.1.29 | Narsarsukite | | | 17.1.30 | Sonolite | |
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Other Names for Cuspidine |
| Russian names: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Cuspidine |
| Reference List: | Dana, E.S. (1892) Dana's system of mineralogy, (6th edition), 533.
Tilley, C.E. (1947) Cuspidine from dolomite contact skarns, Broadford, Skye. Mineralogical Magazine: 28:
90-95.
Van Valkenberg, A. and G.F. Rynders (1958) Synthetic cuspidine. American Mineralogist: 43: 1195-1202.
Saburi, S., A. Kawahara, C. Henmi, I. Kusachi, and K. Kihara (1977) The refinement of the crystal structure of cuspidine. Mineralogical Journal (Japan), 8, 286-298.
Merlino S. & Perchiazzi N.(1988): Modular mineralogy in the cuspidine group of minerals. Canadian Mineralogist: 26: 933-943. |
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Internet Links for Cuspidine |
| Search Engines: |
Look for Cuspidine on Google
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| External Links: | Look for Cuspidine on WebmineralLook for Cuspidine on Athena MineralogyLook for Cuspidine on WikipediaLook for Cuspidine on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Cuspidine in the Natural History Museum (London) online catalogueCuspidine details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | e-Rocks - Mineral Auctions and SalesLapis Mineral MagazinBuy Minerals and Crystals from Crystalarium.comFind Cuspidine on www.crystalclassics.co.ukBuy from David K Joyce mineralsHigh-end worldwide specimens & outstanding customer serviceBuy Fine Minerals from mineralsweb.comrare and unusual minerals mainly crystallizedWright's Rock Shop - excellent mineral specimens since 1970Fabre Minerals - search for Cuspidine specimensSearch for Cuspidine on minvision.comMineral Classics - Worldwide Collector Quality Minerals and Gems |
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Localities for Cuspidine |
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