Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time

Minerals by Properties Minerals by Chemistry Advanced Locality Search Random Mineral Random Locality Search by minID Localities Near Me Search Articles Search Glossary More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Mining Companies Statistics Users Mineral Museums Clubs & Organizations Mineral Shows & Events The Mindat Directory Device Settings The Mineral Quiz

Photo Search Photo Galleries Search by Color New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Montesommaite

A valid IMA mineral species

This page is currently not sponsored. Click here to sponsor this page.

Photos of Montesommaite (43)

Montesommaite Gallery Search Photos of Montesommaite

Edit Add Synonym Edit CIF structures Clear Cache

Montesommaite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

San Vito Quarry, San Vito, Ercolano, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

San Vito Quarry, San Vito, Ercolano, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Montesommaite

San Vito Quarry, San Vito, Ercolano, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Hide all sections | Show all sections

About MontesommaiteHide

Monte Somma

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Formula:

(K,Na)₉Al₉Si₂₃O₆₄ · 10H₂O

Colour:

Colorless

Lustre:

Vitreous

Specific Gravity:

2.34

Crystal System:

Orthorhombic

Member of:

Zeolite Group

Name:

Named in 1990 by Roland C. Rouse, Pete J. Dunn, Joel D. Grice, John L. Sclenker, and John B. Higgins after the type locality of Monte Somma, "the high ridge that constitutes the remains of the volcanic cone that preceded Vesuvius".

Type Locality:

ⓘ Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Zeolite Group.

Unique IdentifiersHide

Mindat ID:

2766

Long-form identifier:

mindat:1:1:2766:9

GUID
(UUID V4):

30806669-8fc8-4f2c-890b-dc3307235bc3

IMA Classification of MontesommaiteHide

IMA status:

Approved

IMA Formula:

K₉(Si₂₃Al₉)O₆₄ · 10H₂O

First published:

1990

Type description reference:

Rouse, R.C., Dunn, P.J., Grice, J.D., Schlenker, J.L., Higgins, J.B. (1990) Montesommaite, (K,Na)9Al9Si23O64·10H2O, a new zeolite related to merlinoite and the gismondine group. American Mineralogist: 75: 1415-1420.

Classification of MontesommaiteHide

Strunz-mindat (2024):

9.GB.30

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H₂O; zeolite family
B : Chains of single connected 4-membered rings

Dana 8th ed.:

77.1.3.12

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites

Hey's CIM Ref.:

16.4.6

16 : Silicates Containing Aluminum and other Metals
4 : Aluminosilicates of Na and K

Mineral SymbolsHide

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

Symbol	Source	Reference
Mtso	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 MontesommaiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colorless

Streak:

White

Hardness Data:

Could not be measured

Cleavage:

None Observed

Density:

2.34(4) g/cm³ (Measured) 2.30 g/cm³ (Calculated)

Optical Data of MontesommaiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.498(1) n_β = 1.506(1) n_γ = 1.507(1)

2V:

Measured: 35° (5), Calculated: 38°

Max Birefringence:

δ = 0.009

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Dispersion:

very weak

Optical Extinction:

X = c, Y = a or b, and Z = a or b

Chemistry of MontesommaiteHide

Mindat Formula:

(K,Na)₉Al₉Si₂₃O₆₄ · 10H₂O

Elements listed:

Al, H, K, Na, O, Si - search for minerals with similar chemistry

Crystallography of MontesommaiteHide

Crystal System:

Orthorhombic

Class (H-M):

mm2 - Pyramidal

Space Group:

Fdd2

Cell Parameters:

a = 10.099(1) Å, b = 10.099(1) Å, c = 17.307(3) Å

Ratio:

a:b:c = 1 : 1 : 1.714

Unit Cell V:

1,765.14 Å³ (Calculated from Unit Cell)

Morphology:

Type material: Two pedions {001} and {001} and two pyramids {hkl} and {hkl}.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

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)
0001338	Montesommaite	Rouse R C, Dunn P J, Grice J D, Schlenker J L, Higgins J B (1990) Montesommaite, (K,Na)9Al9Si23O64.10H2O, a new zeolite related to merlinoite and the gismondine group American Mineralogist 75 1415-1420		1990		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Montesommaite'
loop_
_publ_author_name
'Rouse R C'
'Dunn P J'
'Grice J D'
'Schlenker J L'
'Higgins J B'
_journal_name_full 'American Mineralogist'
_journal_volume 75 
_journal_year 1990
_journal_page_first 1415
_journal_page_last 1420
_publ_section_title
;
 Montesommaite, (K,Na)9Al9Si23O64.10H2O, a new zeolite related to merlinoite and
 the gismondine group
;
_database_code_amcsd 0001338
_chemical_formula_sum 'K (Al.58 Si1.42) O6.25 H.5'
_cell_length_a 7.141
_cell_length_b 7.141
_cell_length_c 17.307
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 882.551
_exptl_crystal_density_diffrn      2.937
_symmetry_space_group_name_H-M 'I 41/a m d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '1/4-y,3/4-x,1/4+z'
  '3/4-y,1/4-x,3/4+z'
  '1/4+y,3/4+x,1/4-z'
  '3/4+y,1/4+x,3/4-z'
  '1/4+y,3/4-x,1/4-z'
  '3/4+y,1/4-x,3/4-z'
  '1/4-y,3/4+x,1/4+z'
  '3/4-y,1/4+x,3/4+z'
  '1/2+x,-y,1/2+z'
  '+x,1/2-y,+z'
  '1/2-x,y,1/2-z'
  '-x,1/2+y,-z'
  '1/2+x,y,1/2-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,1/2+z'
  '-x,1/2-y,+z'
  '1/4+y,1/4+x,3/4+z'
  '3/4+y,3/4+x,1/4+z'
  '1/4-y,1/4-x,3/4-z'
  '3/4-y,3/4-x,1/4-z'
  '1/4-y,1/4+x,3/4-z'
  '3/4-y,3/4+x,1/4-z'
  '1/4+y,1/4-x,3/4+z'
  '3/4+y,3/4-x,1/4+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
K   0.00000   0.00000   0.50000   1.00000   0.02500
Al   0.00000   0.46300   0.09000   0.29000   0.00500
Si   0.00000   0.46300   0.09000   0.71000   0.00500
O1   0.00000   0.25000   0.11600   1.00000   0.01500
O2   0.18570   0.43600   0.87500   1.00000   0.01500
O3   0.00000   0.00000   0.00000   1.00000   0.01500
Wat   0.00000   0.25000   0.34200   0.25000   0.01500

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
6.589 Å	(75)
4.334 Å	(43)
3.299 Å	(100)
3.130 Å	(100)
2.797 Å	(30)
2.513 Å	(18)
2.347 Å	(22)
1.784 Å	(22)
1.720 Å	(16)
1.558 Å	(18)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust	>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
10 : Basalt-hosted zeolite minerals

Type Occurrence of MontesommaiteHide

Type Locality:

ⓘ Pollena quarries, Pollena Trocchia, Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

General Appearance of Type Material:

Transparent, colorless, euhedral crystals up to 0.1 mm in size.

Place of Conservation of Type Material:

National Museum of Natural History, Washington, D.C., USA, 165440.

Geological Setting of Type Material:

Vesicles in scoria

Associated Minerals at Type Locality:

Reference:

Download:

https://rruff.info/rruff_1.0/uploads/AM75_1415.pdf

Synonyms of MontesommaiteHide

IMA1988-038

Other Language Names for MontesommaiteHide

German:Montesommait

Russian:Монтесоммаит

Spanish:Montesommaita

Relationship of Montesommaite to other SpeciesHide

Member of:

Zeolite Group

Other Members of this group:

Alflarsenite	NaCa₂Be₃Si₄O₁₃(OH) · 2H₂O	Mon. 2 : P2₁
Amicite	K₂Na₂Al₄Si₄O₁₆ · 5H₂O	Mon. 2
Ammonioleucite	(NH₄)(AlSi₂O₆)	Tet. 4/m : I4₁/a
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 Subgroup	Zeolite Group.
Chabazite-Levyne Subgroup	M[Al₂Si₄O₁₂] · 6H₂O
Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O	Mon. 2/m : P2₁/b
Clinoptilolite Subgroup	M_3-6(Si₃₀Al₆)O₇₂ · 20H₂O
Cowlesite	CaAl₂Si₃O₁₀ · 6H₂O	Orth. mmm (2/m 2/m 2/m)
Dachiardite Subgroup	Zeolite Group.
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 Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
Faujasite Subgroup	M_3.5[Al₇Si₁₇O₄₈] · 32H₂O
Ferrierite Subgroup	Zeolite Group.
Ferrochiavennite	Ca_1-2Fe[(Si,Al,Be)₅Be₂O₁₃(OH)₂] · 2H₂O	Mon. 2/m : P2₁/b
Flörkeite	(K₃Ca₂Na)[Al₈Si₈O₃₂] · 12H₂O	Tric. 1 : P1
Garronite Subgroup
Gaultite	Na₄Zn₂Si₇O₁₈ · 5H₂O	Orth. mm2 : Fdd2
Gismondine Subgroup	Zeolite Group.
Gmelinite Subgroup	In 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
Gobbinsite	Na₅(Si₁₁Al₅)O₃₂ · 11H₂O	Orth. mmm (2/m 2/m 2/m) : Pnma
Goosecreekite	Ca[Al₂Si₆O₁₆] · 5H₂O	Mon. 2 : P2₁
Gottardiite	Na₃Mg₃Ca₅Al₁₉Si₁₁₇O₂₇₂ · 93H₂O	Orth. mmm (2/m 2/m 2/m) : Cmca
Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
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
Loomisite	Ba[Be₂P₂O₈] · H₂O	Mon. 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 Subgroup	Zeolite Group.
Merlinoite	(K,Na)₅(Ca,Ba)₂Al₉Si₂₃O₆₄ · 23H₂O	Orth. mmm (2/m 2/m 2/m) : Immm
Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆ · 28H₂O	Orth.
Mutinaite	Na₃Ca₄Si₈₅Al₁₁O₁₉₂ · 60H₂O	Orth. mmm (2/m 2/m 2/m) : Pnma
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 Subgroup	Paulingite was originally described in 1960.
Perlialite	K₉Na(Ca,Sr)[Al₂Si₄O₁₂]₆ · 15H₂O	Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
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. 4/mmm (4/m 2/m 2/m) : I4/mcm
Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Terranovaite	(Na,Ca)₈(Si₆₈Al₁₂)O₁₆₀ · 29H₂O	Orth.
Thomsonite Subgroup	The large majority of "thomsonite" is thomsonite-Ca.
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(Al_12.8Si_51.2)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 : B2/m
Weinebeneite	CaBe₃(PO₄)₂(OH)₂ · 4H₂O	Mon. m : Bb
Wenkite	(Ba,K)₄(Ca,Na)₆[(Si,Al)₂₀O₃₉(OH)₂](SO₄)₃ · 0.5H₂O	Hex. 6 m2 : P6₂m
Willhendersonite	KCa[Al₃Si₃O₁₂] · 5H₂O	Tric. 1 : P1
Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O	Mon. m : Pb

Common AssociatesHide

Associated Minerals Based on Photo Data:

5 photos of Montesommaite associated with Merlinoite	(K,Na)₅(Ca,Ba)₂Al₉Si₂₃O₆₄ · 23H₂O
3 photos of Montesommaite associated with Phillipsite-K	(K,Na,Ca_0.5,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
2 photos of Montesommaite associated with Calcite	CaCO₃

Related Minerals - Strunz-mindat Grouping Hide

9.GB.05	Ammonioleucite	(NH₄)(AlSi₂O₆)	Tet. 4/m : I4₁/a
9.GB.05	Analcime	Na(AlSi₂O₆) · H₂O	Tric. 1 : P1
9.GB.05	Hsianghualite	Ca₃Li₂(Be₃Si₃O₁₂)F₂	Iso. 4 3 2 : I4₁ 3 2
9.GB.05	Lithosite	K₆Al₄Si₈O₂₅ · 2H₂O	Mon.
9.GB.05	Leucite	K(AlSi₂O₆)	Tet. 4/m : I4₁/a
9.GB.05	Pollucite	(Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O	Iso. m3m (4/m 3 2/m) : Ia3d
9.GB.05	Wairakite	Ca(Al₂Si₄O₁₂) · 2H₂O	Mon. 2/m : B2/m
9.GB.05 va	Germanate-analcime	NaAlGe₂O₆ · H₂O
9.GB.05 va	Germanate-leucite	KAlGe₂O₆
9.GB.05	Kirchhoffite	Cs(BSi₂O₆)	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.GB.05	Fabrièsite	Na₃Al₃Si₃O₁₂ · 2H₂O	Orth. mm2 : Pmm2
9.GB.10	Laumontite	CaAl₂Si₄O₁₂ · 4H₂O	Mon. 2/m : B2/m
9.GB.15	Yugawaralite	CaAl₂Si₆O₁₆ · 4H₂O	Mon. m : Pb
9.GB.20	Roggianite	Ca₂Be(OH)₂Al₂Si₄O₁₃ · 2.5H₂O	Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
9.GB.25	Goosecreekite	Ca[Al₂Si₆O₁₆] · 5H₂O	Mon. 2 : P2₁
9.GB.35	Parthéite	Ca₂(Si₄Al₄) O₁₅ (OH)₂ · 4H₂O	Mon. 2/m : B2/b

Fluorescence of MontesommaiteHide

In UV light:

No fluorescence with LW or SW UV

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.

Internet Links for MontesommaiteHide

mindat.org URL:

https://www.mindat.org/min-2766.html
Please feel free to link to this page.

Search Engines:

Look for Montesommaite on Google

Look for Montesommaite images on Google

Look for Montesommaite on Bing

Look for Montesommaite images on Bing

Look for Montesommaite on DuckDuckGo

Look for Montesommaite images on DuckDuckGo

Look for Montesommaite in the Rock H. Currier Digital Library

External Links:

Look for Montesommaite on Webmineral

Look for Montesommaite on Wikipedia

Look for Montesommaite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from David K Joyce minerals

Buy rare minerals from Excalibur Minerals

Buy from McDougall Minerals

Wilensky Exquisite Minerals

Blue Gems Australian & International

High-end worldwide specimens & outstanding customer service

Fine Minerals from Weinrich Minerals, Inc.

The Arkenstone - Fine Minerals

References for MontesommaiteHide

Reference List:

Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (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 (6) 1571-1606

Mandarino, Joseph A. (1999) The Zeolite Group. The Mineralogical Record, 30 (1) 5-6

(2023) Montesommaite. Handbook of Mineralogy. Mineralogical Society of America

Localities for MontesommaiteHide

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

- 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.


Italy
Campania Naples Somma-Vesuvius Complex Mount Somma Ercolano San Vito ⓘ San Vito Quarry	Ciriotti et al. (2004)
Pollena Trocchia ⓘ Pollena quarries (TL)	Rouse et al. (1990)
Sant'Anastasia ⓘ Lagno Amendolare ?	Bortolozzi (n.d.) +1 other reference
Somma Vesuviana ⓘ Trapolino Quarry (Cava Nuova)	Russo (1996)

Montesommaite

About MontesommaiteHide

Unique IdentifiersHide

IMA Classification of MontesommaiteHide

Classification of MontesommaiteHide

Mineral SymbolsHide

Physical Properties of MontesommaiteHide

Optical Data of MontesommaiteHide

Chemistry of MontesommaiteHide

Crystallography of MontesommaiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of MontesommaiteHide

Synonyms of MontesommaiteHide

Other Language Names for MontesommaiteHide

Relationship of Montesommaite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of MontesommaiteHide

Other InformationHide

Internet Links for MontesommaiteHide

References for MontesommaiteHide

Localities for MontesommaiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide