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Yofortierite

A valid IMA mineral species

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Photos of Yofortierite (48)

Yofortierite Gallery Search Photos of Yofortierite

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Yofortierite

Wind Mountain, Cornudas Mountains, Otero County, New Mexico, USA

Yofortierite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Yofortierite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Yofortierite

Wind Mountain, Cornudas Mountains, Otero County, New Mexico, USA

Yofortierite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Yofortierite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Yofortierite

Wind Mountain, Cornudas Mountains, Otero County, New Mexico, USA

Yofortierite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

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About YofortieriteHide

Yves O. Fortier

Formula:

Mn²⁺Mn²⁺₂Mn²⁺₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O

Colour:

Pink to pale violet, brown

Lustre:

Silky, Dull

Hardness:

2½

Specific Gravity:

2.18

Crystal System:

Monoclinic

Member of:

Palygorskite Group

Name:

Named in honor of Yves Oscar Fortier (17 August 1914, Quebec City, Quebec, Canada - 19 August 2014, Ottawa, Ontario, Canada), Director of the Geological Survey of Canada (1964-1973), for his many contributions to Canadian geosciences.

Type Locality:

ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Compare 'UM1969-14-SiO:FeHMn' - reported from the same environment.

Unique IdentifiersHide

Mindat ID:

4364

Long-form identifier:

mindat:1:1:4364:5

GUID
(UUID V4):

7759ef63-0985-45c2-a154-3a53f87a7dfe

IMA Classification of YofortieriteHide

IMA status:

Approved

IMA Formula:

Mn²⁺₅Si₈O₂₀(OH)₂ · 7H₂O

Approval year:

1974

First published:

1975

Type description reference:

Perrault, G., Harvey, Y., Pertsowsky, R. (1975) La yofortierite, un nouveau silicate hydraté de manganése de St Hilaire, P. Q. The Canadian Mineralogist, 13 (1) 68-74

Classification of YofortieriteHide

Strunz-mindat (2023):

9.EE.20

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands

Dana 8th ed.:

74.3.1a.3

74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips

Hey's CIM Ref.:

14.17.10

14 : Silicates not Containing Aluminum
17 : Silicates of Mn

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.

Symbol	Source	Reference
Yof	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Yof	Warr (2020)	Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Physical Properties of YofortieriteHide

Lustre:

Silky, Dull

Colour:

Pink to pale violet, brown

Hardness:

2½ on Mohs scale

Density:

2.18 g/cm³ (Measured) 2.82 g/cm³ (Calculated)

Optical Data of YofortieriteHide

Type:

Biaxial

RI values:

n_α = 1.530 n_γ = 1.559

Max Birefringence:

δ = 0.029

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

Surface Relief:

Moderate

Dispersion:

weak

Optical Extinction:

X ∧ fiber axis = 8°.

Pleochroism:

Visible

Comments:

Absorption: Maximum ⊥ length of fibers.

Chemistry of YofortieriteHide

Mindat Formula:

Mn²⁺Mn²⁺₂Mn²⁺₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O

Elements listed:

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

Common Impurities:

Ti,Al,Cr,Zn,Ca,K

Crystallography of YofortieriteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

B2/m

Setting:

C2/m

Cell Parameters:

a = 14.1686 Å, b = 17.8583 Å, c = 5.2919 Å
β = 105.878°

Ratio:

a:b:c = 0.793 : 1 : 0.296

Unit Cell V:

1287.9 Å³

Morphology:

Radiating fibres, single crystals are thin, about 1 micron.

Crystal StructureHide

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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)
0019873	Yofortierite	Hawthorne F C, Abdu Y A, Tait K T, Back M E (2013) The crystal structure of yofortierite The Canadian Mineralogist 51 243-251		2013	Poudrette Quarry, Mont St. Hilaire, Quebec, Canada	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Yofortierite'
loop_
_publ_author_name
'Hawthorne F C'
'Abdu Y A'
'Tait K T'
'Back M E'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 51 
_journal_year 2013
_journal_page_first 243
_journal_page_last 251
_publ_section_title
;
 The crystal structure of yofortierite
;
_database_code_amcsd 0019873
_chemical_compound_source 'Poudrette Quarry, Mont St. Hilaire, Quebec, Canada'
_chemical_formula_sum 'Si8 Mn3.1 Mg1.02 Al.01 Ti.02 Fe.22 Zn.11 Ca.18 O29.28 H17.22'
_cell_length_a 14.1686
_cell_length_b 17.8583
_cell_length_c 5.2919
_cell_angle_alpha 90
_cell_angle_beta 105.878
_cell_angle_gamma 90
_cell_volume 1287.907
_exptl_crystal_density_diffrn      2.407
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-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
Si1   0.29667   0.41441   0.02119   1.00000   0.01390
Si2   0.29544   0.33245   0.52172   1.00000   0.01500
Mn1   0.50000   0.50000   0.00000   0.57000   0.01470
Mg1   0.50000   0.50000   0.00000   0.43000   0.01470
Al2   0.50000   0.41128   0.50000   0.00500   0.01710
Ti2   0.50000   0.41128   0.50000   0.01000   0.01710
Fe2   0.50000   0.41128   0.50000   0.11000   0.01710
Mn2   0.50000   0.41128   0.50000   0.63500   0.01710
Zn2   0.50000   0.41128   0.50000   0.05500   0.01710
Mg2   0.50000   0.41128   0.50000   0.01500   0.01710
Ca3   0.50000   0.31362   0.00000   0.09000   0.01830
Mn3   0.50000   0.31362   0.00000   0.63000   0.01830
Mg3   0.50000   0.31362   0.00000   0.28000   0.01830
O1   0.41446   0.40991   0.10740   1.00000   0.01770
O2   0.41240   0.33161   0.60840   1.00000   0.02380
O3   0.25000   0.25000   0.50000   1.00000   0.03160
O4   0.57540   0.50000   0.39660   0.67000   0.02080
Wat4   0.57540   0.50000   0.39660   0.33000   0.02080
O5   0.25720   0.50000   0.00700   1.00000   0.02120
O6   0.25093   0.37121   0.23290   1.00000   0.01900
O7   0.25140   0.37756   0.73340   1.00000   0.02000
Wat8   0.40650   0.23060   0.10330   1.00000   0.05060
Wat9   0.57760   0.00000   0.27600   0.82000   0.16000
Wat10   0.50000   0.12610   0.50000   0.82000   0.08800
H   0.64720   0.50000   0.45600   0.67000   0.07000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si1 0.02040 0.01040 0.01200 -0.00120 0.00640 -0.00030
Si2 0.02330 0.01100 0.01120 -0.00150 0.00560 -0.00100
Mn1 0.02090 0.01320 0.01080 0.00000 0.00590 0.00000
Mg1 0.02090 0.01320 0.01080 0.00000 0.00590 0.00000
Al2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Ti2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Fe2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Mn2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Zn2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Mg2 0.01940 0.02080 0.01150 0.00000 0.00510 0.00000
Ca3 0.02290 0.01920 0.01240 0.00000 0.00400 0.00000
Mn3 0.02290 0.01920 0.01240 0.00000 0.00400 0.00000
Mg3 0.02290 0.01920 0.01240 0.00000 0.00400 0.00000
O1 0.02110 0.01600 0.01710 -0.00130 0.00700 -0.00200
O2 0.02580 0.03030 0.01550 0.00510 0.00580 -0.00310
O3 0.05800 0.01340 0.02500 -0.01240 0.01320 -0.00170
O4 0.02520 0.01910 0.01890 0.00000 0.00750 0.00000
Wat4 0.02520 0.01910 0.01890 0.00000 0.00750 0.00000
O5 0.02720 0.01310 0.02360 0.00000 0.00760 0.00000
O6 0.02420 0.01830 0.01550 -0.00030 0.00740 0.00470
O7 0.02630 0.02010 0.01410 -0.00210 0.00660 -0.00530
Wat8 0.05200 0.05200 0.04700 -0.01850 0.01210 0.00450
Wat9 0.12800 0.14500 0.25000 0.00000 0.12200 0.00000
Wat10 0.08900 0.07400 0.08500 0.00000 -0.00300 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
10.5 Å	(100)
3.302 Å	(90)
2.621 Å	(30)
2.510 Å	(20)
4.14 Å	(18)

Comments:

From type description, most important peaks.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of YofortieriteHide

Type Locality:

ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

General Appearance of Type Material:

Radiating fibres.

Place of Conservation of Type Material:

Ecole Polytechnique, Montreal, Canada.
Royal Ontario Museum, Toronto, Canada.
Canadian Museum of Nature, Ottawa, Ontario, Canada, number 37133.
British Museum of Natural History, London, UK, number BM 1975,418.
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, number 131952.
Ecole des Mines, Paris, France, number 51122.
Universite de Paris, Paris, France.
Musee d'Histoire Naturelle, Paris, France, number 178118.

Geological Setting of Type Material:

A late-stage hydrothermal mineral in pegmatite veins in nepheline syenite.

Associated Minerals at Type Locality:

Serandite	Polylithionite	Microcline	Eudialyte	Analcime
Albite	Aegirine

Reference:

Perrault, G., Harvey, Y., and Pertsowsky, R (1975) La yofortierite, un nouveau silicate hydraté de manganése de St Hilaire, P.Q. The Canadian Mineralogist: 13: 68-74.

Download:

https://rruff.info/rruff_1.0/uploads/CM13_68.pdf

Synonyms of YofortieriteHide

Other Language Names for YofortieriteHide

German:Yofortierit

Simplified Chinese:锰坡缕石

Spanish:Yofortierita

Traditional Chinese:錳坡縷石

Relationship of Yofortierite to other SpeciesHide

Member of:

Palygorskite Group

Other Members of this group:

Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O	Mon. 2/m : B2/m
Raite	Mn²⁺Mn²⁺₂Na₂(◻_1.75Ti_0.25)Si₈O₂₀(OH)₂(H₂O)₄ · Na(H₂O)₆	Orth. 2 2 2 : C2 2 2
Tuperssuatsiaite	Fe³⁺Fe³⁺₂(Na◻)◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 2H₂O	Mon. 2/m : B2/m
Unnamed (Na-Ca-Fe-Silicate-Hydrate)	NaCa(Fe²⁺,Al,Mn)₅[Si₈O₁₉(OH)](OH)₇ · 5H₂O	Tric. 1 : P1
Windhoekite	Fe³⁺(Fe³⁺_1.67◻_0.33)Ca₂◻₂Si₈O₂₀(OH)₂(H₂O)₄(OH)₂ · 6H₂O	Mon. 2/m : B2/m
Windmountainite	◻Fe³⁺₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O	Mon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:

25 photos of Yofortierite associated with Microcline	K(AlSi₃O₈)
13 photos of Yofortierite associated with Analcime	Na(AlSi₂O₆) · H₂O
10 photos of Yofortierite associated with Aegirine	NaFe³⁺Si₂O₆
9 photos of Yofortierite associated with Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
8 photos of Yofortierite associated with Eudialyte Group	[N(1)N(2)N(3)N(4)N(5)]₃[M(1.1)M(1.2)]₃[M(2.1)M(2.2)M(2.3)]_3-6[M(3)M(4)]Z₃[Si₂₄O₇₂]Θ₄X(1)X(2)
6 photos of Yofortierite associated with Serandite	NaMn²⁺₂Si₃O₈(OH)
4 photos of Yofortierite associated with Smectite Group	A_0.3D_2-3[T₄O₁₀]Z₂ · nH₂O
3 photos of Yofortierite associated with Zorite	Na₈(Ti,Nb)₅(Si₆O₁₇)₂(OH,O)₅ · 14H₂O
3 photos of Yofortierite associated with Sodalite	Na₄(Si₃Al₃)O₁₂Cl
3 photos of Yofortierite associated with Chabazite

Related Minerals - Strunz-mindat Grouping Hide

9.EE.	Cairncrossite	Sr₂Ca_7-xNa_2x(Si₄O₁₀)₄(OH)₂(H₂O)_15-x	Tric. 1 : P1
9.EE.05	Bementite	Mn₇Si₆O₁₅(OH)₈	Mon.
9.EE.07	Innsbruckite	Mn₃₃(Si₂O₅)₁₄(OH)₃₈	Mon. m : Bm
9.EE.10	Brokenhillite	Mn₈Si₆O₁₅(OH)₁₀	Hex. 6mm : P6₃mc
9.EE.10	Pyrosmalite-(Fe)	Fe²⁺₈Si₆O₁₅(OH,Cl)₁₀	Trig. 3m (3 2/m) : P3m1
9.EE.10	Friedelite	Mn²⁺₈Si₆O₁₅(OH,Cl)₁₀	Mon. 2/m : B2/m
9.EE.10	Pyrosmalite-(Mn)	Mn²⁺₈Si₆O₁₅(OH,Cl)₁₀	Trig. 3m (3 2/m) : P3m1
9.EE.10	Mcgillite	(Mn,Fe)₈Si₆O₁₅(OH)₈Cl₂	Mon. 2/m : B2/m
9.EE.15	Nelenite	(Mn,Fe)₁₆(Si₁₂O₃₀)(OH)₁₄[As³⁺₃O₆(OH)₃]	Trig. 3m (3 2/m) : R3m
9.EE.15	Schallerite	Mn²⁺₁₆As₃Si₁₂O₃₆(OH)₁₇	Trig. 3m : P3m1
9.EE.20	Palygorskite	◻Al₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O	Mon. 2/m : B2/m
9.EE.20	Tuperssuatsiaite	Fe³⁺Fe³⁺₂(Na◻)◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 2H₂O	Mon. 2/m : B2/m
9.EE.20	Windhoekite	Fe³⁺(Fe³⁺_1.67◻_0.33)Ca₂◻₂Si₈O₂₀(OH)₂(H₂O)₄(OH)₂ · 6H₂O	Mon. 2/m : B2/m
9.EE.20	Unnamed (Na-Ca-Fe-Silicate-Hydrate)	NaCa(Fe²⁺,Al,Mn)₅[Si₈O₁₉(OH)](OH)₇ · 5H₂O	Tric. 1 : P1
9.EE.20	Windmountainite	◻Fe³⁺₂Mg₂◻₂Si₈O₂₀(OH)₂(H₂O)₄ · 4H₂O	Mon. 2/m : B2/m
9.EE.25	Falcondoite	(Ni,Mg)₄Si₆O₁₅(OH)₂ · 6H₂O	Orth.
9.EE.25	Loughlinite	Na₂Mg₃Si₆O₁₆ · 8H₂O	Orth. mmm (2/m 2/m 2/m)
9.EE.25	Sepiolite	Mg₄(Si₆O₁₅)(OH)₂ · 6H₂O	Orth. mmm (2/m 2/m 2/m) : Pnna
9.EE.25	Kalifersite	(K,Na)₅Fe³⁺₇Si₂₀O₅₀(OH)₆ · 12H₂O	Tric. 1 : P1
9.EE.30	Gyrolite	NaCa₁₆Si₂₃AlO₆₀(OH)₈ · 14H₂O	Tric. 1 : P1
9.EE.30	Orlymanite	Ca₄Mn₃Si₈O₂₀(OH)₆ · 2H₂O	Hex.
9.EE.30	Tungusite	Ca₄Fe₂Si₆O₁₅(OH)₆	Tric. 1 : P1
9.EE.35	Reyerite	(Na,K)₂Ca₁₄(Si,Al)₂₄O₅₈(OH)₈ · 6H₂O	Trig. 3 : P3
9.EE.35	Truscottite	(Ca,Mn)₁₄Si₂₄O₅₈(OH)₈ · 2H₂O	Trig.
9.EE.35	Kodamaite	Na₃(Ca₅Na)Si₁₆O₃₆(OH)₄F₂ · (14-x)H₂O	Tric. 1 : P1
9.EE.40	Natrosilite	Na₂Si₂O₅	Mon. 2/m : P2₁/b
9.EE.45	Makatite	Na₂Si₄O₈(OH)₂ · 4H₂O	Mon. 2/m : P2₁/b
9.EE.50	Varennesite	Na₈Mn₂Si₁₀O₂₅(OH,Cl)₂ · 12H₂O	Orth. mmm (2/m 2/m 2/m) : Cmcm
9.EE.55	Raite	Mn²⁺Mn²⁺₂Na₂(◻_1.75Ti_0.25)Si₈O₂₀(OH)₂(H₂O)₄ · Na(H₂O)₆	Orth. 2 2 2 : C2 2 2
9.EE.60	Intersilite	Na₆Mn²⁺Ti[Si₁₀O₂₄(OH)](OH)₃ · 4H₂O	Mon.
9.EE.65	Shafranovskite	Na₃K₂(Mn,Fe,Na)₄[Si₉(O,OH)₂₇](OH)₂ · nH₂O	Trig. 3m : P3 1c
9.EE.65	Zakharovite	Na₄Mn₅Si₁₀O₂₄(OH)₆ · 6H₂O	Trig. 3m
9.EE.70	Zeophyllite	Ca₁₃Si₁₀O₂₈(OH)₂F₈ · 6H₂O	Trig. 3 : R3
9.EE.75	Minehillite	(K,Na)_2-3Ca₂₈Zn₄Al₄Si₄₀O₁₁₂(OH)₁₆	Hex.
9.EE.80	Fedorite	(Na,K)_2-3(Ca₄Na₃)Si₁₆O₃₈(OH,F)₂ · 3.5H₂O	Tric. 1 : P1
9.EE.80	Martinite	(Na,◻,Ca)₁₂Ca₄(Si,S,B)₁₄B₂O₃₈(OH,Cl)₂F₂ · 4H₂O	Tric. 1 : P1
9.EE.80	Ellingsenite	Na₅Ca₆Si₁₈O₃₈(OH)₁₃ · 6H₂O	Tric. 1 : P1
9.EE.85	Lalondeite	(Na,Ca)₆(Ca,Na)₃Si₁₆O₃₈(F,OH)₂ · 3H₂O	Tric. 1 : P1

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 YofortieriteHide

mindat.org URL:

https://www.mindat.org/min-4364.html
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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for YofortieriteHide

Reference List:

Perrault, G., Harvey, Y., Pertsowsky, R. (1975) La yofortierite, un nouveau silicate hydraté de manganése de St Hilaire, P. Q. The Canadian Mineralogist, 13 (1) 68-74

Fleischer, Michael, Chao, George Y., Mandarino, Joseph A. (1976) New Mineral Names. American Mineralogist, 61 (3-4) 338-341 p.341

Horváth, László, Gault, Robert A., Tarassoff, Peter, Pfenninger-Horváth, Elsa (1998) Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Quebec. The Mineralogical Record, 29 (2) 83-118

Hawthorne, F. C., Abdu, Y. A., Tait, K. T., Back, M. E. (2013) The crystal structure of yofortierite. The Canadian Mineralogist, 51 (2) 243-251 doi:10.3749/canmin.51.2.243

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

Localities for YofortieriteHide

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.


Canada (TL)
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) (TL)	*Perrault, G., Harvey, Y., Pertsowsky, R. (1975) La yofortierite, un nouveau silicate hydraté de manganése de St Hilaire, P. Q. The Canadian Mineralogist, 13 (1) 68-74* *Horváth, László, Gault, Robert A. (1990) The Mineralogy of Mont Saint-Hilaire, Quebec. The Mineralogical Record, 21 (4) 281-359* *Hawthorne, F. C., Abdu, Y. A., Tait, K. T., Back, M. E. (2013) The crystal structure of yofortierite. The Canadian Mineralogist, 51 (2) 243-251 doi:10.3749/canmin.51.2.243* *Horváth, L., Gault, R.A., Pfenninger-Horváth, E., Poirier, G. (2019) Mont Saint-Hilaire: History, Geology, Mineralogy* - Special Publication No. 14. The Canadian Mineralogist, Ottawa.**
Lajemmerais RCM Varennes & St-Amable ⓘ Saint-Amable sill	Horváth, László, Gault, Robert A., Tarassoff, Peter, Pfenninger-Horváth, Elsa (1998) Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Quebec. The Mineralogical Record, 29 (2) 83-118
ⓘ Demix-Varennes quarry	Horváth, László, Gault, Robert A., Tarassoff, Peter, Pfenninger-Horváth, Elsa (1998) Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Quebec. The Mineralogical Record, 29 (2) 83-118

Greenland
Kujalleq ⓘ Ilímaussaq complex	Semenov, Evgeny I. (2001) Notes on ephesite, terskite, Na-komarovite, ceriopyrochlore-(Ce), joaquinite-(Ce) and other minerals from the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin, 190 (190) 123-125 doi:10.34194/ggub.v190.5181 *Petersen, Ole V. (2001) List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin, 190 (190) 25-33 doi:10.34194/ggub.v190.5171*
Kuannersuit Plateau (Kvanefjeld) ⓘ Narsaq River pegmatite	*Pavel.M. Kartashov (n.d.) analytical data.*

Namibia
Khomas Region Windhoek Rural Aris ⓘ Aris Quarries	Yakovenchuk, V. N., Ivanyuk, G. Y., Pakhomovsky, Y. A., Selivanova, E. A., Mikhailova, J. A., Krivovichev, S. V., Zolotarev, A. A., Zalkind, O. A. (2011) Ellingsenite, Na₅Ca₆Si₁₈O₃₈(OH)₁₃·6H₂O, a new martinite-related mineral species from phonolite of the Aris alkaline complex, Namibia. The Canadian Mineralogist, 49 (5) 1165-1173 doi:10.3749/canmin.49.5.1165 (listed as associated mineral, no details given)

Russia
Murmansk Oblast Lovozersky District ⓘ Karnasurt Mountain	Arzamastsev, Andrei., Yakovenchuk, Victor., Pakhomovsky, Yakov., Ivanyuk, Gregory (2008) Guidebook for 33rd International Geological Congress Excursion - The Khibina and Lovozero alkaline massifs:Geology and unique mineralization Vol. 47. IUGS - International Union of Geological Sciences.
ⓘ Natrolite Stock (Pegmatite No. 61)	*Pavel.M. Kartashov (n.d.) analytical data.* New Data on Minerals M., 2004 Vol 39 pp 5-13 Pekov, I. V. (2000) Lovozero Massif - History, Pegmatites, Minerals. Ocean Pictures LTD: Moscow 2000.
ⓘ Yubileinaya pegmatite	Reiner Mielke 2016

USA
Arkansas Hot Spring County Magnet Cove ⓘ Jones Mill Quarry (Martin Marietta Quarry; Highway 51 Quarry; Mid-State Quarry)	Henry Barwood - unpublished (2010)
New Mexico Otero County Cornudas Mountains ⓘ Wind Mountain ?

Yofortierite

About YofortieriteHide

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