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Monticellite

A valid IMA mineral species - grandfathered
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About MonticelliteHide

07643060017271925279882.jpg
Teodoro Monticelli
Formula:
CaMg(SiO4)
Colour:
Colourless, grey or greenish
Lustre:
Vitreous, Resinous
Hardness:
5 - 5½
Specific Gravity:
3.03 - 3.27
Crystal System:
Orthorhombic
Member of:
Name:
Named by H.J. Brooke (1831) after Teodoro Monticelli (1759-1845). He published several works on Mount Vesuvius, including "Storia dei fenomeni del Vesuvio" (1823) and "Prodromo della mineralogia vesuviana" (1825). The latter together with Niccolò Covelli (see covellite).

Unique IdentifiersHide

Mindat ID:
2768
Long-form identifier:
mindat:1:1:2768:3

IMA Classification of MonticelliteHide

Classification of MonticelliteHide

9.AC.10

9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
51.3.2.1

51 : NESOSILICATES Insular SiO4 Groups Only
3 : Insular SiO4 Groups Only with all cations in octahedral [6] coordination
14.6.10

14 : Silicates not Containing Aluminum
6 : Silicates of Ca with alkali or Mg or both

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
MtcIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
MtcKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
MtcSiivolam & 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
MtcWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
MtcThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Pronunciation of MonticelliteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of MonticelliteHide

Vitreous, Resinous
Transparency:
Transparent, Translucent
Comment:
Slightly resinous when massive
Colour:
Colourless, grey or greenish
Streak:
White
Hardness:
5 - 5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Poor on {010}.
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.03 - 3.27 g/cm3 (Measured)    3.058 g/cm3 (Calculated)

Optical Data of MonticelliteHide

Type:
Biaxial (-)
RI values:
nα = 1.639 - 1.663 nβ = 1.645 - 1.674 nγ = 1.653 - 1.680
2V:
Measured: 88° to 65°, Calculated: 72° to 84°
Max. Birefringence:
δ = 0.014 - 0.017
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 µm 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:
Very High (positive)
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.
Dispersion:
relatively weak
Optical Extinction:
X = b; Y = c; Z = a.

Chemistry of MonticelliteHide

Mindat Formula:
CaMg(SiO4)
Element Weights:
Element% weight
O40.902 %
Ca25.615 %
Si17.950 %
Mg15.534 %

Calculated from ideal end-member formula.
O
Ca
Si
Mg
Common Impurities:
Ti,Al,Fe,Mn,Zn,H2O

Crystallography of MonticelliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Cell Parameters:
a = 4.815 Å, b = 11.08 Å, c = 6.37 Å
Ratio:
a:b:c = 0.435 : 1 : 0.575
Unit Cell V:
339.84 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Well-formed prismatic crystals, to 5 cm; massive, granular.
Twinning:
On {031}, producing six-pointed star-shaped forms.
Comment:
Space group: Pbnm (non-standard setting).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0019700MonticellitePilati T, Demartin F, Gramaccioli C M (1995) Thermal parameters for minerals of the olivine group: their implication on vibrational spectra, thermodynamic functions and transferable force fields Acta Crystallographica B51 721-7331995Crestmore, California, USA0293
0000646MonticelliteLager G A, Meagher E P (1978) High-temperature structural study of six olivines American Mineralogist 63 365-37719780298
0014814MonticelliteKimata M, Nishida N (1987) The crystal structure of Co-monticellite Ca1.255Co0.745SiO4 and its significance as a solid solution crystal Neues Jahrbuch fur Mineralogie, Monatshefte 1987 160-17019870293
0001096MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519870.0001293
0018072MonticelliteBrown G, West J (1927) The structure of monticellite (Mg Ca Si O4). _cod_database_code 1011202 Zeitschrift fur Kristallographie 66 154-16119270293
0000647MonticelliteLager G A, Meagher E P (1978) High-temperature structural study of six olivines American Mineralogist 63 365-37719780608
0000648MonticelliteLager G A, Meagher E P (1978) High-temperature structural study of six olivines American Mineralogist 63 365-37719780888
0000649MonticelliteLager G A, Meagher E P (1978) High-temperature structural study of six olivines American Mineralogist 63 365-377197801068
0001098MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519871.11293
0001097MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519871.11293
0001099MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519872.07293
0001100MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519872.91293
0001101MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519874.12293
0001102MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519875.3293
0001103MonticelliteSharp Z D, Hazen R M, Finger L W (1987) High-pressure crystal chemistry of monticellite, CaMgSiO4 American Mineralogist 72 748-75519876.17293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Loading XRD data...
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
2.666 Å(100)
3.637 Å(40)
2.586 Å(40)
4.185 Å(35)
2.935 Å(35)
2.543 Å(30)
1.818 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
6 : Secondary asteroid phases4.566-4.560
Stage 3a: Earth’s earliest Hadean crust>4.50
7 : Ultramafic igneous rocks
High-? alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks
Stage 5: Initiation of plate tectonics<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
51 : Pyrometamorphic minerals (see also #54 and #56)<0.36

Type Occurrence of MonticelliteHide

General Appearance of Type Material:
Crystals with a general shape similar to quartz.
Place of Conservation of Type Material:
University of Naples, Naples, Italy, 22111.
Associated Minerals at Type Locality:

Synonyms of MonticelliteHide

Other Language Names for MonticelliteHide

Simplified Chinese:钙镁橄榄石
Spanish:Monticellita
Traditional Chinese:鈣鎂橄欖石

Varieties of MonticelliteHide

BatrachiteA pale greenish-grey variety of monticellite.

Originally reported from Toal de Rizzoni, Monzoni Mts, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy.

Relationship of Monticellite to other SpeciesHide

Member of:
Other Members of Olivine Group:
Calcio-olivineCa2SiO4Orth. mmm(2/m2/m2/m)
FayaliteFe2+2(SiO4)Orth. mmm(2/m2/m2/m)
ForsteriteMg2(SiO4)Orth. mmm(2/m2/m2/m)
GlaucochroiteCaMn2+(SiO4)Orth. mmm(2/m2/m2/m)
HinokageiteMnMg(SiO4)Orth. mm2
KirschsteiniteCaFe2+(SiO4)Orth. mmm(2/m2/m2/m) : Pnma
Laihunite(Fe3+,Fe2+,◻)2(SiO4)Mon. 2/m : P21/b
LiebenbergiteNi2(SiO4)Orth. mmm(2/m2/m2/m)
TephroiteMn2+2(SiO4)Orth. mmm(2/m2/m2/m) : Pnma
Forms a series with:

Common AssociatesHide

Associations Based on Photo Data:
27 photos of Monticellite associated with CalciteCaCO3
10 photos of Monticellite associated with VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
9 photos of Monticellite associated with 'Fassaite'(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
8 photos of Monticellite associated with ClintoniteCaAlMg2(SiAl3O10)(OH)2
6 photos of Monticellite associated with HarkeriteCa48Mg16[AlSi4O15(OH)]4(BO3)16(CO3)16 · 2(H2O,HCl)
6 photos of Monticellite associated with PerovskiteCaTiO3
5 photos of Monticellite associated with AfwilliteCa3[SiO4][SiO2(OH)2] · 2H2O
5 photos of Monticellite associated with EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
5 photos of Monticellite associated with GypsumCaSO4 · 2H2O
5 photos of Monticellite associated with Pyrochlore GroupA2Nb2(O,OH)6Z

Related Minerals - Strunz-mindat GroupingHide

9.AC.PoirieriteMg2SiO4Orth. mmm(2/m2/m2/m) : Pmma
9.AC.AhrensiteSiFe2O4Iso. m3m(4/m32/m)
9.AC.05Laihunite(Fe3+,Fe2+,◻)2(SiO4)Mon. 2/m : P21/b
9.AC.05ForsteriteMg2(SiO4)Orth. mmm(2/m2/m2/m)
9.AC.05TephroiteMn2+2(SiO4)Orth. mmm(2/m2/m2/m) : Pnma
9.AC.05HinokageiteMnMg(SiO4)Orth. mm2
9.AC.05LiebenbergiteNi2(SiO4)Orth. mmm(2/m2/m2/m)
9.AC.05KirschsteiniteCaFe2+(SiO4)Orth. mmm(2/m2/m2/m) : Pnma
9.AC.05GlaucochroiteCaMn2+(SiO4)Orth. mmm(2/m2/m2/m)
9.AC.05FayaliteFe2+2(SiO4)Orth. mmm(2/m2/m2/m)
9.AC.15BrunogeieriteGe4+Fe2+2O4Iso. m3m(4/m32/m) : Fd3m
9.AC.15Ringwoodite(Mg,Fe2+)2SiO4Iso. m3m(4/m32/m) : Fd3m
9.AC.20ChesnokoviteNa2[SiO2(OH)2] · 8H2OOrth. mmm(2/m2/m2/m) : Ibca

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Monticellite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for MonticelliteHide

References for MonticelliteHide

Reference List:

Localities for MonticelliteHide

Showing 234 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Afghanistan
 
  • Badakhshan
    • Kuran wa Munjan District
Woolley (2019)
Peters et al. (2007)
  • Panjshir
    • Khenj District
Merkel et al. (2013)
Angola
 
  • Cuanza Sul Province
    • Seles
      • Catanda
Campeny et al. (2017)
Antarctica
 
  • East Antarctica
    • Mac Robertson Land
      • Prince Charles Mountains
S. F. Foley et al. (2002)
    • Queen Maud Land
      • Queen Fabiola Mountains
Kojima et al. (1995) +1 other reference
Australia
 
  • South Australia
    • Goyder Regional Council
      • Pandappa Conservation Park
Reference: Keeling J. et al.MESA ...
  • Tasmania
    • West Coast municipality
      • Zeehan mining district
        • Zeehan mineral field
          • Tasmanian Smelting Company site
Parbhakar-Fox et al. (2019)
  • Western Australia
    • Leonora Shire
Kiviets et al. (1998)
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Guttaring
        • Waitschach
Kolitsch et al. (2013)
Bolivia
 
  • Cochabamba
    • Ayopaya Province
      • Independencia
Schultz et al. (2004)
Brazil
 
  • Mato Grosso
    • Juína
      • Sorriso river
Kaminsky et al. (2015)
  • Minas Gerais
    • Douradoquara
Coldebella et al. (2020)
    • Monte Carmelo
Gibson et al. (1995)
  • Santa Catarina
1995 +1 other reference
  • São Paulo
    • Cajati
Berger et al. (2009)
Bulgaria
 
  • Yambol Province
    • Bolyarovo Municipality
I. Kostov et al. (1964)
Canada
 
  • British Columbia
    • Atlin Mining Division
      • Rainy Hollow District
Webster et al. (1992)
    • Greenwood Mining Division
      • Grand Forks
Richard Gunter Collection.
    • Liard Mining Division
Sabina (1973)
  • Newfoundland and Labrador
    • Labrador
OWENS et al. (2010)
Owens (2000)
  • Northwest Territories
    • Camsell Lake
De Beers Group of Companies
Masun (1999) +2 other references
      • Ekati Mine
Abersteiner et al. (2020) +1 other reference
Abersteiner et al. (2018)
      • Gahcho Kué Mine
Caro et al. (2004)
  • Nova Scotia
    • Inverness Co.
Chatterjee (1980)
    • Victoria Co.
Chatterjee (1977)
  • Nunavut
    • Qikiqtaaluk Region
      • Somerset Island
December 1994 +3 other references
  • Ontario
Grice (1989)
    • Hastings County
      • Town of Bancroft
        • Dungannon Township
          • York River area
Sabina (1982)
    • Thunder Bay District
      • Killala Lake Area
Wu et al. (2010)
  • Québec
    • Laurentides
      • Deux-Montagnes RCM
        • Oka
Sabina (1968) +1 other reference
Gold (1969)
Sabina (1968) +1 other reference
Pouliot (1970) +1 other reference
    • Montérégie
      • Vaudreuil-Soulanges RCM
        • Vaudreuil-Dorion
Bowen +2 other references
    • Nord-du-Québec
      • Nunavik
Rosa et al. (2010)
    • Saguenay-Lac-Saint-Jean
      • Le Fjord-du-Saguenay RCM
        • Saint-Honoré
Currie (1976)
Berger et al. (2009)
China
 
  • Gansu
    • Jinchang
      • Jinchuan District
Xue et al. (2023)
    • Longnan
      • Li County
Yu et al. (2001) +2 other references
  • Guangdong
    • Heyuan
      • Lianping Co.
Wang (1983)
  • Hebei
    • Handan
      • She County
Cao Zhengmin (2000)
    • Xingtai
      • Xingtai Co.
Zhengmin Cao and Weijiong Zhu (1993)
  • Hubei
    • Jingmen
      • Jingshan
Huilong Yu (1985)
  • Qinghai
    • Haixi Mongol and Tibetan Autonomous Prefecture
      • Dulan County
Zhuangzhi Qian et al. (2004)
      • Golmud City (Ge'ermu Co.)
Zhuangzhi Qian et al. (2004) +1 other reference
  • Yunnan
    • Dali
      • Midu County
        • Machangqing Cu-Mo-Au ore field (Baoxingchang Cu-Mo-Au ore field)
Yunnan Metallurgical Geology Team No. 310 (1977)
Colombia
 
  • Magdalena Department
Castellanos-Alarcón et al. (2016)
Czech Republic
 
  • Central Bohemian Region
    • Benešov District
      • Vracovice
Šrein (2007)
  • Liberec Region
    • Liberec District
      • Osečná
Ulrych +8 other references
DR Congo
 
  • Haut-Katanga
    • Lake Mweru
MinMag 58:496
Finland
 
  • North Savo
O´Brien Hugh
France
 
  • Bourgogne-Franche-Comté
    • Doubs
      • Besançon
        • Ornans
A. M. Davis (1985)
Germany
 
  • North Rhine-Westphalia
    • Arnsberg
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
            • Helmke quarry nature reserve
Bender et al. (1994) +1 other reference
    • Cologne
      • Aachen
        • Stolberg
Jeroen Goedhart
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Vordereifel
        • Ettringen
Lapis (5) +1 other reference
  • Saxony
    • Sächsische Schweiz-Osterzgebirge
      • Sebnitz
Pfeiffer (1994) +2 other references
Greenland
 
  • Sermersooq
    • Kangerlussuaq Fjord
Petersen et al. (1985)
Steenfelt et al. (2007) +1 other reference
India
 
  • Andhra Pradesh
    • Anantapur District
Gupta et al. (1986, September) +2 other references
Ajit Kumar Reddy (1987) +1 other reference
        • Wajrakarur–Lattavaram cluster
Kaur et al. (2013)
Shaikh et al. (2018)
  • Meghalaya
    • East Khasi Hills District
Krishnamurthy (1985) +1 other reference
  • Rajasthan
    • Jodhpur Division
      • Sirohi District
        • Deri-Ambaji Zn-Pb-Cu deposit
Deb (1980)
  • Telangana
    • Narayanpet District
      • Narayanpet kimberlite field
        • Kotakonda Cluster (KK–1 to KK–7)
Chalapathi Rao et al. (1996)
Indonesia
 
  • Papua Province
    • Mimika Regency
Mertig et al. (1994)
Mertig et al. (1994)
Rubin et al. (1997)
Prendergast (2003)
Amer.Min. (1995)
Mackinney et al. (1988)
New (2006)
Iraq
 
  • Sulaymaniyah Governorate
    • Pshdar District
      • Qaladiza
        • Hero
Al-Hermezi et al. (1986)
Ireland
 
  • Leinster
    • Louth County
      • Carlingford
Nockolds et al. (1947)
Italy
 
  • Basilicata
    • Potenza Province
      • Melfi
Stoppa et al. (2009)
      • Rionero in Vulture
La Volpe et al. (1984) +12 other references
  • Campania
    • Metropolitan City of Naples
Brooke (1831) +1 other reference
  • Emilia-Romagna
    • Ferrara Province
      • Vigarano Mainarda
        • Vigarano Pieve
rearley et al. (1998)
  • Lazio
    • Metropolitan City of Rome Capital
      • Alban Hills
Orlandi P. - (1975)
      • Campagnano di Roma
Stoppa et al. (2019)
    • Rieti Province
      • Rieti
        • Santa Rufina
Sabatini (1903) +6 other references
  • Lombardy
    • Bergamo Province
      • Cene
        • Rossa Valley
Maida (2002)
    • Sondrio Province
      • Chiesa in Valmalenco
Marchesini et al. (2025)
      • Valfurva
        • Zebrù Valley
Bedognè et al. (2006) +1 other reference
  • Piedmont
    • Verbano-Cusio-Ossola Province
Piccoli et al. (2007)
  • Sicily
    • Metropolitan City of Messina
      • Eolie Islands (Aeolian Islands)
        • Lipari
Munno et al. (1980)
  • Trentino-Alto Adige/Südtirol
    • Trento Province
      • Moena
Exel (1987) +1 other reference
[var: Batrachite] De Michele (1974)
De Michele (1974)
      • Predazzo
De Michele (1974)
      • San Giovanni di Fassa
[var: Batrachite]
De Michele (1974)
      • Valdaone
        • Daone
          • Daone Valley
            • Fumo Valley
Avanzini et al. (2007)
  • Tuscany
    • Livorno Province
      • Piombino
Sperl (1980)
  • Umbria
    • Terni Province
Stoppa +7 other references
      • San Venanzo
Sabatini (1899) +10 other references
  • Veneto
    • Vicenza Province
      • Laghi
Boscardin et al. (2011)
      • Schio
        • Tretto
          • Val Munari
            • Contrade Maglio-Pornaro
Boscardin et al. (1988) +2 other references
Japan
 
  • Hiroshima Prefecture
    • Shoubara City
Kusachi et al (1979)
  • Hokkaidō Prefecture
    • Shiribeshi Subprefecture
Nagata (1982)
  • Kanagawa Prefecture
    • Ashigarakami District
      • Yamakita
- (n.d.)
Petrov (n.d.)
  • Nagano Prefecture
    • Minamisaku District
      • Minami-aiki village
Kishi et al (2003)
Malawi
 
  • Southern Region
    • Balaka
Garson +6 other references
Mexico
 
  • Chihuahua
    • Chihuahua Municipality
      • Ávalos
Espejel-Garcia et al. (2012, December)
    • Pueblito de Allende
Brearley et al. (1998)
    • Urique Municipality
www.diabras.com (2007)
  • Hidalgo
    • Zimapán Municipality
      • Zimapán
Panczner (1987)
  • Veracruz
    • Tatatila Municipality
      • Tatatila
        • La Mancuerna
Alejandro Felix Gutierrez Collection
Middle East
 
Gross (1977)
Mongolia
 
  • Töv Province
    • Bayan District
Peretyazhko et al. (2017)
Namibia
 
  • Oshikoto Region
    • Tsumeb
Ettler et al. (2009)
  • ǁKaras Region
    • Berseba Constituency
      • Berseba Townlands Farm 426
Verwoerd (1967) +11 other references
Kurszlaukis et al. (1997) +1 other reference
Norway
 
  • Telemark
    • Skien
Jamtveit et al. (1997)
  • Troms og Finnmark
Nordrum (2005)
Pakistan
 
  • Balochistan
    • Pishin District
Ahmed et al. (1990) +3 other references
Poland
 
  • Lower Silesian Voivodeship
    • Świdnica County
      • Gmina Żarów
Łobos K. et al. (2019)
  • Silesian Voivodeship
    • Katowice
Warchulski et al. (2015)
Warchulski et al. (2015)
    • Piekary Śląskie
      • Brzeziny Śląskie
        • Orzeł Biały mine
Warchulski et al. (2015)
Romania
 
  • Bihor County
Marincea +4 other references
  • Caraş-Severin County
    • Oraviţa
Marincea et al. (2011)
    • Prigor
Marincea et al. (2014, September) +1 other reference
  • Galați County
    • Galați
HÎRTOPANU et al. (2014)
  • Hunedoara County
    • Vaţa de Jos
      • Cerboia Valley
Marincea +3 other references
Pascal et al. (2001)
  • Maramureș County
    • Groșii Țibleșului
Szakáll (2002)
Russia
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
      • Murunskii Massif
        • Kedroviy stock
Dumańska-Słowik et al. (2022)
  • Bashkortostan
    • Uchalinsky District
Gottman et al. (2018)
  • Buryatia
    • Severo-Baykalsky District
      • Dovyren Highlands
Konnikov et al. (2000) +1 other reference
Kislov +1 other reference
Kislov +1 other reference
Kislov +2 other references
  • Irkutsk Oblast
    • Beloziminskoe
Ashchepkov +8 other references
Savel'eva et al. (2020) +1 other reference
    • Narin-Kunta
Armbruster et al. (2011) +1 other reference
    • Slyudyansky District
      • Slyudyanka
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Plosky Tolbachik Volcano
Sharygin et al. (2018)
  • Kemerovo Oblast
    • Tashtagolsky District
      • Synzas River
doi.org (n.d.) +1 other reference
  • Khabarovsk Krai
    • Ayano-Maysky district
Pavel M. Kartashov (n.d.) +1 other reference
  • Krasnoyarsk Krai
    • Evenkiysky District
Sokol et al. (2019) +3 other references
      • Nizhnyaya Tunguska River Basin
Reverdatto et al. (1979)
    • Maimecha and Kotui Rivers Basin
Wu et al. (2010) +1 other reference
Kogarko et al. (1991)
Henderson et al. (1999)
    • Sharypovsky district
Vrublevskii (2015)
    • Taymyrsky Dolgano-Nenetsky District
Sazonov et al. (2024)
  • Murmansk Oblast
Potter et al. (2017)
...
    • Kola Peninsula
Korobeinikov et al. (1998)
    • Kovdorsky District
Liferovich et al. (1998) +4 other references
    • Lovozersky District
Fomina et al. (2020)
    • Northern Karelia
...
Arzamastsev et al. (1990) +2 other references
Korobeinikov et al. (1998)
    • Turii Cape
... +2 other references
  • Republic of Karelia
    • Prionezhsky District
      • Zaonezhskoe kimberlite field
Putintseva et al. (2017)
  • Sakha
    • Aldan
Chayka +9 other references
    • Mirninsky District
      • Daldyn
Boyd et al. (1997) +2 other references
Golovin (2025)
      • Vilyui River Basin
        • Vilyui Reservoir
Novgorodova M.I. (1996)
Yakovlev et al. (2008, October)
Sharygin et al. (2021)
  • Sverdlovsk Oblast
    • Sysertsky District
      • Dvurechensk
Victor V. Sharygin analytical data
Sklyarov et al. (2021)
Slovakia
 
  • Banská Bystrica Region
Ďuďa R. et al. (1993)
      • Vysoká
Koděra et al. (2009) +2 other references
South Africa
 
  • Limpopo
    • Sekhukhune District Municipality
      • Fetakgomo Tubatse Local Municipality
Cairncross et al. (1995)
    • Waterberg District Municipality
      • Mogalakwena Local Municipality
        • Mokopane
          • Turfspruit farm
Grobler et al. (2019)
  • Northern Cape
    • Frances Baard District Municipality
      • Sol Plaatje Local Municipality
        • Kimberley
Abersteiner et al. (2019)
Field et al. (2008) +1 other reference
          • KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine)
Giuliani et al. (2017)
    • Pixley ka Seme District Municipality
      • Ubuntu Local Municipality
Abersteiner et al. (2024)
Spain
 
  • Canary Islands
    • Las Palmas Province
Coello et al. (92) +10 other references
Casillas et al. (2011)
    • Santa Cruz de Tenerife Province
      • Tenerife
        • Candelaria
          • Barranco Hondo
Dill et al. (2023)
  • Catalonia
    • Barcelona
      • Vallès Oriental
        • Gualba
          • Gualba quarries
Locality description
Sweden
 
  • Västernorrland County
    • Sundsvall
Sandström et al. (2010)
Tanzania
 
  • Arusha Region
    • Monduli District
      • Kerimasi volcano
Mitchell et al. (2021)
    • Ngorongoro District
Mitchell et al. (2004) +1 other reference
Turkey
 
  • Rize Province
Taner et al. (2013)
Uganda
 
  • Western Region
    • Kabarole
Barker et al. (1989)
UK
 
  • Scotland
    • Argyll and Bute
      • Isle of Mull
Cann (1965)
    • Highland
      • Caol and Mallaig
        • Isle of Muck
Tilley (1947)
      • Eilean á Chèo
        • Isle of Skye
HOLNESS (1992)
          • Broadford
            • Kilchrist
            • Torrin
[Specimen in the Natural History Museum
Beard et al. (2007)
      • Fort William and Ardnamurchan
        • Ardnamurchan
Agrell (1965)
Ukraine
 
  • Donetsk Oblast
    • Starobesheve Raion
      • Kalmiuske Raion
Yatsenko et al. (2020)
USA
 
  • Alabama
    • Perry County
Greenwood et al. (1992)
  • Arizona
    • Cochise County
      • Tombstone Mining District
stratigraphy +4 other references
        • Tombstone
Butler et al. (1938b) +1 other reference
  • Arkansas
USGS National Geochemical Database : ...
    • Hot Spring County
Shockley (1976) +2 other references
Smith (1988)
Berger et al. (2009)
Rocks & Min.: 64:326.
V.C. Fryklund and D.F. Holbrook (1950)
  • California
    • Riverside County
      • Jurupa Valley
        • Crestmore
Eakle (1916) +4 other references
            • Sky Blue Hill
Woodford et al. (1941) +1 other reference
Woodford et al. (1941)
Woodford et al. (1941)
        • Jurupa Mountains
Cooney (1956) +3 other references
Schaller (1935)
Museum Quarterly 43:99-104.
        • Clark Mountain District (Clark District)
          • Clark Mountain
Schaller (1935) +3 other references
Schaller (1935) +3 other references
Abstracts with Program of the ...
  • Colorado
    • Gunnison County
      • Dorchester Mining District
        • Taylor Park
Eckel et al. (1997)
      • White Earth Mining District (Powderhorn Mining District)
Larsen (1942) +1 other reference
    • San Juan County
      • Animas Mining District
        • Silverton
          • Kendall Mountain
Eckel et al. (1997)
  • Michigan
    • Iron County
      • Mansfield Township
Heinrich et al. (2004)
  • Montana
    • Prairie County
Hearn (2004)
  • Nevada
Castor et al. (2004)
  • New Mexico
    • Luna County
      • Tres Hermanas Mountains
        • Tres Hermanas Mining District
          • South Peak (South Sisters Peak)
NMGS 21st Field Conference
  • New York
    • Essex County
      • Keene Township
AmMin 63:991
Tracy et al. (1978) +2 other references
  • Oklahoma
    • Washita County
Brearley et al. (1998)
  • Pennsylvania
    • Indiana County
      • Dixonville
        • Tanoma Coal Mine
Bikerman (1997)
  • Texas
    • Brewster County
      • Christmas Mountains
Smith (1991)
    • Culberson County
      • Apache Peak area
Smith (1991) +1 other reference
  • Utah
    • Salt Lake County
Bullock (1981)
    • Utah County
Bullock (1981)
    • Wasatch County
Field (1917)
  • Virginia
    • Henrico County
Dodd (1971)
    • Highland County
      • Hightown
Dietrich (1990)
 
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