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

Cerchiaraite-(Mn)

A valid IMA mineral species

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

Photos of Cerchiaraite-(Mn) (38)

Cerchiaraite-(Mn) Gallery Search Photos of Cerchiaraite-(Mn)

Edit Add Synonym Edit CIF structures Clear Cache

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Cerchiaraite-(Mn)

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Hide all sections | Show all sections

About Cerchiaraite-(Mn)Hide

Entry

Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Formula:

Ba₄Mn³⁺₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]

Colour:

Deep green

Lustre:

Vitreous

Hardness:

4 - 5

Specific Gravity:

3.62

Crystal System:

Tetragonal

Member of:

Cerchiaraite Group

Name:

Named cerchiaraite by Basso et al. in 2000, for the type locality of Cerchiara mine, Italy. It was renamed with a suffix by Kampf et al. in 2013 following the discovery of the Fe and Al analogues. The suffix is for the dominant trivalent M cation.

Type Locality:

ⓘ Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

Isostructural with:

Cerchiaraite-(Al), Cerchiaraite-(Fe)

The Mn analogue of cerchiaraite-(Al) and cerchiaraite-(Fe). Related to bobmeyerite and ashburtonite.

Unique IdentifiersHide

Mindat ID:

7081

Long-form identifier:

mindat:1:1:7081:8

GUID
(UUID V4):

73751980-0f32-4220-abbf-ca1a0f1e74d6

IMA Classification of Cerchiaraite-(Mn)Hide

IMA status:

Approved

First published:

2000

Type description reference:

Basso, R., Lucchetti, G., Zefiro, L., Palenzona, A. (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy. Neues Jahrbuch für Mineralogie, Monatshefte, 2000. 373-384

Classification of Cerchiaraite-(Mn)Hide

Strunz-mindat (2024):

9.CF.25

9 : SILICATES (Germanates)
C : Cyclosilicates
F : [Si₄O₁₂]₈- 4-membered single rings, with insular complex anions

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
Ccr-Mn	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 Cerchiaraite-(Mn)Hide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Deep green

Streak:

Pale green

Hardness:

4 - 5 on Mohs scale

Hardness:

VHN₅₀=296 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

None Observed
None

Fracture:

Irregular/Uneven

Density:

3.62 g/cm³ (Measured) 3.70 g/cm³ (Calculated)

Optical Data of Cerchiaraite-(Mn)Hide

Type:

Uniaxial (+)

RI values:

n_ω = 1.745(5) n_ε = 1.765(5)

Max Birefringence:

δ = 0.020

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

Surface Relief:

High

Chemistry of Cerchiaraite-(Mn)Hide

Mindat Formula:

Ba₄Mn³⁺₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]

Elements listed:

Ba, Cl, H, Mn, O, Si - search for minerals with similar chemistry

Crystallography of Cerchiaraite-(Mn)Hide

Crystal System:

Tetragonal

Class (H-M):

4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal

Space Group:

I4/mmm

Setting:

I4/mmm

Cell Parameters:

a = 14.223(16) Å, c = 6.141(4) Å

Ratio:

a:c = 1 : 0.432

Unit Cell V:

1,242.29 Å³ (Calculated from Unit Cell)

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)
0014905	Cerchiaraite-(Mn)	Basso R, Lucchetti G, Zefiro L, Palenzona A (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy Neues Jahrbuch fur Mineralogie, Monatshefte 2000 373-384		2000	Cerchiara mine, Va di Vara, northern Apennines, Italy	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cerchiaraite-(Mn)'
loop_
_publ_author_name
'Basso R'
'Lucchetti G'
'Zefiro L'
'Palenzona A'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 2000 
_journal_year 2000
_journal_page_first 373
_journal_page_last 384
_publ_section_title
;
 Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from
 the Cerchiara mine, northern Apennines, Italy
;
_database_code_amcsd 0014905
_chemical_compound_source 'Cerchiara mine, Va di Vara, northern Apennines, Italy'
_chemical_formula_sum 'Ba4 Mn4 Si6 Cl O25'
_cell_length_a 14.215
_cell_length_b 14.215
_cell_length_c 6.126
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1237.858
_exptl_crystal_density_diffrn      3.684
_symmetry_space_group_name_H-M 'I 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-y,-x,z'
  '1/2-y,1/2-x,1/2+z'
  'y,x,-z'
  '1/2+y,1/2+x,1/2-z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,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'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  'y,x,z'
  '1/2+y,1/2+x,1/2+z'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,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'
  '-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
Ba   0.21900   0.00000   0.00000   1.00000   0.01596
Mn   0.25000   0.25000   0.25000   1.00000   0.01102
Si1   0.38810   0.38810   0.00000   1.00000   0.00836
Si2   0.11300   0.43100   0.00000   0.25000   0.01520
Cl   0.00000   0.00000   0.00000   1.00000   0.01760
O1   0.34540   0.34540   0.22360   1.00000   0.01343
O2   0.17310   0.31060   0.00000   1.00000   0.04015
O3   0.36930   0.50000   0.00000   1.00000   0.01976
O4   0.40300   0.00000   0.00000   0.25000   0.02723
O5   0.00000   0.36400   0.30700   0.50000   0.03863

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
10.15 Å	(88)
4.417 Å	(49)
3.319 Å	(75)
3.01 Å	(100)
2.619 Å	(74)
2.577 Å	(62)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)

Type Occurrence of Cerchiaraite-(Mn)Hide

Type Locality:

ⓘ Cerchiara Mine, Borghetto di Vara, La Spezia Province, Liguria, Italy

General Appearance of Type Material:

grains and radial aggregates

Place of Conservation of Type Material:

Dipartimento per Studio del Territorio e delle sue Risorse, Università di Genova, Italy.

Associated Minerals at Type Locality:

Reference:

Basso, R., Lucchetti, G., Zefiro, L., Palenzona, A. (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy. Neues Jahrbuch für Mineralogie, Monatshefte: 373-384.

Synonyms of Cerchiaraite-(Mn)Hide

IMA1999-012

Other Language Names for Cerchiaraite-(Mn)Hide

German:Cerchiarait

Russian:Черкьяраит-(Mn)

Spanish:Cerchiaraita

Relationship of Cerchiaraite-(Mn) to other SpeciesHide

Member of:

Cerchiaraite Group

Other Members of this group:

Cerchiaraite-(Al)	Ba₄Al₄O₃(OH)₃(Si₄O₁₂)[Si₂O₃(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
Cerchiaraite-(Fe)	Ba₄Fe³⁺₄O₃(OH)₃(Si₄O₁₂)[Si₂O₃(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Common AssociatesHide

Associated Minerals Based on Photo Data:

4 photos of Cerchiaraite-(Mn) associated with Namansilite	NaMn³⁺Si₂O₆
3 photos of Cerchiaraite-(Mn) associated with Orientite	Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀ · 4H₂O
3 photos of Cerchiaraite-(Mn) associated with Quartz	SiO₂

Related Minerals - Strunz-mindat Grouping Hide

9.CF.	Bobmeyerite	Pb₄(Al₃Cu)(Si₄O₁₂)(S_0.5Si_0.5O₄)(OH)₇Cl(H₂O)₃	Orth. mmm (2/m 2/m 2/m) : Pnnm
9.CF.05	Ashburtonite	Pb₄Cu₄(Si₄O₁₂)(HCO₃)₄(OH)₃Cl · H₂O	Tet.
9.CF.10	Kainosite-(Y)	Ca₂(Y,Ce)₂(Si₄O₁₂)(CO₃) · H₂O	Orth. mmm (2/m 2/m 2/m)
9.CF.15	Clinophosinaite	Na₁₂(Ca,Sr)₄(Si₄O₁₂)(PO₄)₄	Mon. 2/m : P2/b
9.CF.15	Phosinaite-(Ce)	Na₁₃Ca₂(Ce,La,Th,Nd,Pr)(Si₄O₁₂)(PO₄)₄	Orth. 2 2 2 : P2₁ 2₁ 2
9.CF.20	Strakhovite	NaBa₃Mn²⁺₂Mn³⁺₂Si₆O₁₉(OH)₃	Orth. mmm (2/m 2/m 2/m)
9.CF.25	Cerchiaraite-(Al)	Ba₄Al₄O₃(OH)₃(Si₄O₁₂)[Si₂O₃(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
9.CF.25	Cerchiaraite-(Fe)	Ba₄Fe³⁺₄O₃(OH)₃(Si₄O₁₂)[Si₂O₃(OH)₄]Cl	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

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 Cerchiaraite-(Mn)Hide

mindat.org URL:

https://www.mindat.org/min-7081.html
Please feel free to link to this page.

Search Engines:

Look for Cerchiaraite-(Mn) on Google

Look for Cerchiaraite-(Mn) images on Google

Look for Cerchiaraite-(Mn) on Bing

Look for Cerchiaraite-(Mn) images on Bing

Look for Cerchiaraite-(Mn) on DuckDuckGo

Look for Cerchiaraite-(Mn) images on DuckDuckGo

Look for Cerchiaraite-(Mn) in the Rock H. Currier Digital Library

External Links:

Look for Cerchiaraite-(Mn) on Webmineral

Look for Cerchiaraite-(Mn) on Wikipedia

Look for Cerchiaraite-(Mn) 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:

The Arkenstone - Fine Minerals

Buy from McDougall Minerals

Fine Minerals from Weinrich Minerals, Inc.

High-end worldwide specimens & outstanding customer service

Buy from David K Joyce minerals

Buy rare minerals from Excalibur Minerals

Wilensky Exquisite Minerals

Blue Gems Australian & International

References for Cerchiaraite-(Mn)Hide

Reference List:

Jambor, J.L., Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.

Palenzona, A., Bulgarelli, G., Selmi, P. (2001) La cerchiaraite della miniera di Cerchiara. Rivista Mineralogica Italiana: 243-244.

Coombs, D.S., Kawachi, Y., Miura, H., Chapell, D. (2004) Cerchiaraite and Ca-bearing noélbensonite from Woods mine, New South Wales, Australia. European Journal of Mineralogy: 16: 185-189.

Kampf, A. R., Roberts, A. C., Venance, K. E., Carbone, C., Belmonte, D., Dunning, G. E., Walstrom, R. E. (2013) Cerchiaraite-(Fe) and cerchiaraite-(Al), two new barium cyclosilicate chlorides from Italy and California, USA. Mineralogical Magazine, 77 (1) 69-80 doi:10.1180/minmag.2013.077.1.07

(2023) Cerchiaraite-(Mn) Handbook of Mineralogy. Mineralogical Society of America

Localities for Cerchiaraite-(Mn)Hide

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.


Australia
New South Wales Inglis Co. ⓘ Woods Mine (Wood's Rhodonite Mine)	Coombs et al. (2004)

Italy (TL)
Liguria La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine (TL)	Basso et al. (2000) +2 other references

Cerchiaraite-(Mn)

About Cerchiaraite-(Mn)Hide

Unique IdentifiersHide

IMA Classification of Cerchiaraite-(Mn)Hide

Classification of Cerchiaraite-(Mn)Hide

Mineral SymbolsHide

Physical Properties of Cerchiaraite-(Mn)Hide

Optical Data of Cerchiaraite-(Mn)Hide

Chemistry of Cerchiaraite-(Mn)Hide

Crystallography of Cerchiaraite-(Mn)Hide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of Cerchiaraite-(Mn)Hide

Synonyms of Cerchiaraite-(Mn)Hide

Other Language Names for Cerchiaraite-(Mn)Hide

Relationship of Cerchiaraite-(Mn) to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for Cerchiaraite-(Mn)Hide

References for Cerchiaraite-(Mn)Hide

Localities for Cerchiaraite-(Mn)Hide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide