Quick Links : Mindat手册 The Rock H. Currier Digital Library Mindat Newsletter [Free Download]

主页关于 Mindat Mindat手册 Mindat的历史版权 Who We Are 联系我们于 Mindat.org刊登广告

捐赠给 Mindat Corporate Sponsorship 赞助板页已赞助的板页在 Mindat刊登广告的广告商于 Mindat.org刊登广告

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

搜索矿物的性质搜索矿物的化学 Advanced Locality Search 随意显示任何一种矿物 Random Locality 使用minID搜索邻近产地 Search Articles 搜索词汇表更多搜索选项

Mindat手册添加新照片 Rate Photos 产区编辑报告 Coordinate Completion Report 添加词汇表项目

Mining Companies 统计会员列表 Mineral Museums Clubs & Organizations 矿物展及活动 The Mindat目录表设备设置 The Mineral Quiz

照片搜索 Photo Galleries Search by Color 今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集 Photography

Macfallite

A valid IMA mineral species

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

Photos of Macfallite (37)

Macfallite Gallery Search Photos of Macfallite

Edit Add Synonym Edit CIF structures Clear Cache

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Macfallite, etc.

Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

Hide all sections | Show all sections

About MacfalliteHide

Russell P. MacFall

Formula:

Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃

Mn may be replaced by minor Al.

Colour:

Reddish-brown, maroon, dull pink

Lustre:

Sub-Adamantine, Silky

Hardness:

Specific Gravity:

3.43

Crystal System:

Monoclinic

Name:

Named in 1979 by Paul (Paulus) Brian Moore, Jun Ito, and Ian M. Steele in honor of Russell Patterson MacFall [1 September 1903 Indianapolis, Indiana, USA - 6 September 1983 Coronado, California, USA] editor for Chicago Tribune newspaper and, earlier, for other newspapers. Russ was an amateur mineralogist interested in systematic mineralogy and an author of six books on popular mineralogy, paleontology, and geology. Russ was also a specialist in the minerals of the region where macfallite was first discovered.

Type Locality:

ⓘ Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

This page provides mineralogical data about Macfallite.

Unique IdentifiersHide

Mindat ID:

2508

Long-form identifier:

mindat:1:1:2508:5

GUID
(UUID V4):

8ceeebbe-2136-4a15-861d-310a3fea6b20

IMA Classification of MacfalliteHide

IMA status:

Approved

Approval year:

1974

Type description reference:

Moore, P.B., Ito, J., and Steele, I.M. (1979) Macfallite and orientite: calcium manganese (III) silicates from upper Michigan. Mineralogical Magazine: 43: 325-331.

Classification of MacfalliteHide

Strunz-mindat (2024):

9.BG.15

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO₄ and Si₂O₇ groups; cations in octahedral [6] and greater coordination

Dana 8th ed.:

58.2.3.2

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)

Hey's CIM Ref.:

16.16.20

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates 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.

Symbol	Source	Reference
Mcf	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 MacfalliteHide

Lustre:

Sub-Adamantine, Silky

Transparency:

Transparent, Translucent

Colour:

Reddish-brown, maroon, dull pink

Streak:

Brown with a reddish tint

Hardness:

5 on Mohs scale

Cleavage:

Perfect
{001}

Density:

3.43(2) g/cm³ (Measured) 3.53 g/cm³ (Calculated)

Optical Data of MacfalliteHide

Type:

Biaxial (+/-)

RI values:

n_α = 1.773 - 1.775 n_β = 1.795 n_γ = 1.810 - 1.815

2V:

Measured: 86° , Calculated: 78° to 88°

Max Birefringence:

δ = 0.037 - 0.040

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

Surface Relief:

Very High

Dispersion:

r < v medium

Pleochroism:

Visible

Comments:

X = colorless to yellow; Y = light brown; Z = dark brown to reddish brown.

Comments:

2V(meas.) = Very large

Chemistry of MacfalliteHide

Mindat Formula:

Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃

Mn may be replaced by minor Al.

Elements listed:

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

Common Impurities:

Ti,Al,Fe,Cr,V,Cu,Mg,K,Na,H₂O

Crystallography of MacfalliteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/m

Setting:

P2₁/m

Cell Parameters:

a = 10.235(3) Å, b = 6.086(6) Å, c = 8.970(5) Å
β = 110.75(3)°

Ratio:

a:b:c = 1.682 : 1 : 1.474

Unit Cell V:

522.50 Å³ (Calculated from Unit Cell)

Twinning:

By reflection on {100}, commonly repeated.

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)
0000966	Macfallite	Moore P B, Shen J, Araki T (1985) Crystal chemistry of the (M2)3+ phi2 sheet: Structural principles and crystal structures of ruizite, macfallite and orientite American Mineralogist 70 171-181		1985	Lake Manganese, Copper Harbor, Keweenaw County, Michigan, USA	0	293
0004767	Macfallite	Nagashima M, Rahmoun N S, Alekseev E V, Geiger C A, Armbruster T, Akasaka M (2008) Crystal chemistry of macfallite: Relationships to sursassite and pumpellyite American Mineralogist 93 1851-1857		2008	Manganese Lake, Copper Harbor, Keweenaw County, Michigan	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Macfallite'
loop_
_publ_author_name
'Moore P B'
'Shen J'
'Araki T'
_journal_name_full 'American Mineralogist'
_journal_volume 70 
_journal_year 1985
_journal_page_first 171
_journal_page_last 181
_publ_section_title
;
 Crystal chemistry of the (M2)3+ phi2 sheet: Structural principles and crystal
 structures of ruizite, macfallite and orientite
;
_database_code_amcsd 0000966
_chemical_compound_source 'Lake Manganese, Copper Harbor, Keweenaw County, Michigan, USA'
_chemical_formula_sum 'Mn2.61 Al.39 Ca2 Si3 O14 H3'
_cell_length_a 10.235
_cell_length_b 6.086
_cell_length_c 8.970
_cell_angle_alpha 90
_cell_angle_beta 110.75
_cell_angle_gamma 90
_cell_volume 522.500
_exptl_crystal_density_diffrn      3.466
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,-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
Mn1   0.00000   0.00000   0.00000   0.61000   0.02280
Al   0.00000   0.00000   0.00000   0.39000   0.02280
Mn2   0.50000   0.00000   0.00000   1.00000   0.02989
Mn3   0.00000   0.00000   0.50000   1.00000   0.02900
Ca1   0.68170   0.25000   0.79540   1.00000   0.03610
Ca2   0.31280   0.25000   0.66870   1.00000   0.03711
Si1   0.81070   0.25000   0.19050   1.00000   0.02267
O1   0.65190   0.25000   0.05600   1.00000   0.02508
O2   0.90450   0.25000   0.07780   1.00000   0.03331
O3   0.83870   0.03320   0.30600   1.00000   0.02850
Si2   0.19560   0.25000   0.29290   1.00000   0.02229
O4   0.12340   0.25000   0.42790   1.00000   0.02748
O5   0.36480   0.25000   0.39860   1.00000   0.02660
O6   0.16350   0.02850   0.18580   1.00000   0.02799
Si3   0.50290   0.25000   0.33770   1.00000   0.02305
O7   0.63940   0.25000   0.50730   1.00000   0.02520
O8   0.50100   0.02190   0.24260   1.00000   0.02647
O-H9   0.37950   0.25000   0.93940   1.00000   0.02786
O-H10   0.93240   0.25000   0.58600   1.00000   0.02736
O-H11   0.06490   0.25000   0.90360   1.00000   0.03242
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
Mn1 0.00370 0.01780 0.00460 0.00000 0.00100 -0.00010
Al 0.00370 0.01780 0.00460 0.00000 0.00100 -0.00010
Mn2 0.00520 0.02330 0.00590 -0.00020 0.00170 0.00040
Mn3 0.00530 0.02120 0.00610 -0.00020 0.00160 0.00010
Ca1 0.00640 0.02360 0.00990 0.00000 0.00310 0.00000
Ca2 0.00600 0.02650 0.00860 0.00000 0.00150 0.00000
Si1 0.00310 0.02050 0.00400 0.00000 0.00100 0.00000
O1 0.00300 0.02210 0.00550 0.00000 0.00130 0.00000
O2 0.00370 0.03660 0.00430 0.00000 0.00170 0.00000
O3 0.00370 0.02300 0.00650 0.00050 0.00120 -0.00090
Si2 0.00360 0.01830 0.00450 0.00000 0.00150 0.00000
O4 0.00410 0.02670 0.00420 0.00000 0.00200 0.00000
O5 0.00340 0.02490 0.00420 0.00000 0.00070 0.00000
O6 0.00440 0.02290 0.00570 0.00000 0.00160 -0.00080
Si3 0.00420 0.01860 0.00440 0.00000 0.00190 0.00000
O7 0.00260 0.02200 0.00600 0.00000 0.00110 0.00000
O8 0.00490 0.02060 0.00540 -0.00090 0.00210 -0.00090
O-H9 0.00560 0.02190 0.00510 0.00000 0.00240 0.00000
O-H10 0.00420 0.02380 0.00410 0.00000 0.00050 0.00000
O-H11 0.00470 0.03020 0.00360 0.00000 -0.00030 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.70 Å	(100)
4.76 Å	(90)
1.588 Å	(85)
3.904 Å	(80)
3.40 Å	(70)
2.97 Å	(70)
2.18 Å	(70)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of MacfalliteHide

Type Locality:

ⓘ Manganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA

General Appearance of Type Material:

radial and framboidal aggregates

Place of Conservation of Type Material:

National Museum of Natural History, Washington, D.C., USA, 135923; The Natural History Museum, London, England, 1984,139.

Associated Minerals at Type Locality:

Reference:

Moore, P.B., Ito, J., and Steele, I.M. (1979) Macfallite and orientite: calcium manganese (III) silicates from upper Michigan. Mineralogical Magazine: 43: 325-331.

Synonyms of MacfalliteHide

IMA1974-057

Other Language Names for MacfalliteHide

German:Macfallit

Russian:Макфаллит

Spanish:Macfallita

Common AssociatesHide

Associated Minerals Based on Photo Data:

18 photos of Macfallite associated with Calcite	CaCO₃
16 photos of Macfallite associated with Orientite	Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀ · 4H₂O
9 photos of Macfallite associated with Braunite	Mn²⁺Mn³⁺₆(SiO₄)O₈
1 photo of Macfallite associated with Ranciéite	(Ca,Mn²⁺)_0.2(Mn⁴⁺,Mn³⁺)O₂ · 0.6H₂O
1 photo of Macfallite associated with Pyrolusite	Mn⁴⁺O₂

Related Minerals - Strunz-mindat Grouping Hide

9.BG.	Shuiskite-(Cr)	Ca₂Cr³⁺Cr³⁺₂[Si₂O₆OH][SiO₄](OH)₂O	Mon. 2/m : B2/m
9.BG.	Alnaperbøeite-(Ce)	Ca(Ce_2.5Na_0.5)(AlAl₂Al)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/m
9.BG.	Magnesiovesuvianite	Ca₁₉MgAl₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀](OH)(OH)₉	Tet. 4/m : P4/n
9.BG.	Alumovesuvianite	Ca₁₉AlAl₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉	Tet. 4/m : P4/n
9.BG.	Zoisite-(Pb)	(CaPb)(AlAlAl)O[Si₂O₇][SiO₄](OH)	Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.	Vielleaureite-(Ce)	(Mn²⁺Ce)(MgAlMn²⁺)F[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.	Heflikite	(CaCa)(AlAlSc)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.	Zilbermintsite-(La)	(CaLa₅)(Fe³⁺Al₃Fe²⁺)[Si₂O₇][SiO₄]₅O(OH)₃	Mon. 2/m : P2₁/m
9.BG.05b	Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Allanite-(La)	(CaLa)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Allanite-(Y)	(CaY)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon.
9.BG.05a	Clinozoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Dissakisite-(Ce)	(CaCe)(AlAlMg)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Dollaseite-(Ce)	(CaCe)(MgAlMg)F[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05a	Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05a	Hancockite	(CaPb)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Khristovite-(Ce)	(CaCe)(MgAlMn²⁺)F[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05a	Mukhinite	(CaCa)(AlAlV³⁺)O[Si₂O₇][SiO₄](OH)	Mon.
9.BG.05a	Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Piemontite-(Sr)	(CaSr)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Manganiandrosite-(La)	(Mn²⁺La)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Tweddillite	(CaSr)(Mn³⁺AlMn³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Ferriallanite-(Ce)	(CaCe)(Fe³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Niigataite	(CaSr)(AlAlAl)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Manganiandrosite-(Ce)	(Mn²⁺Ce)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Dissakisite-(La)	(CaLa)(AlAlMg)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Vanadoandrosite-(Ce)	(Mn²⁺Ce)(V³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Uedaite-(Ce)	(Mn²⁺Ce)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05a	Epidote-(Sr)	(CaSr)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Allanite-(Nd)	(CaNd)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Unnamed (Mg-analogue of Ferriallanite-(Ce))	(CaCe)(Fe³⁺AlMg)O[Si₂O₇][SiO₄](OH)
9.BG.05b	Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))	(CaCe)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)
9.BG.05b	Ferriallanite-(La)	(CaLa)(Fe³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Åskagenite-(Nd)	(Mn²⁺Nd)(AlAlFe³⁺)O[Si₂O₇][SiO₄]O	Mon. 2/m : P2₁/m
9.BG.05	Piemontite-(Pb)	(CaPb)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Vanadoallanite-(La)	(CaLa)(V³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Ferriandrosite-(La)	(Mn²⁺La)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05	Androsite-(Ce)	(Mn²⁺Ce)(AlAlMn²⁺)O[Si₂O₇][SiO₄](OH)
9.BG.05a v	Unnamed (Ga-analogue of Epidote)	(CaCa)(AlAlGa³⁺)O[Si₂O₇][SiO₄](OH)
9.BG.05b	UM1989-32-SiO:AlCaFeHREE	(Ca_0.5◻_0.5REE)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
9.BG.05b	Manganiakasakaite-(La)	(CaLa)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.05b	Ferriakasakaite-(Ce)	(CaCe)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.9.BG.	Ferriakasakaite-(La)	(CaLa)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.9.BG.	Ferriandrosite-(Ce)	(Mn²⁺Ce)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
9.BG.9.BG	Ferriperbøeite-(Ce)	CaCe₃(Fe³⁺Al₂Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/m
9.BG.10	Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)	Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.15	Sursassite	Mn²⁺₂Al₃(SiO₄)(Si₂O₇)(OH)₃	Mon. 2/m : P2₁/m
9.BG.20	Julgoldite-(Fe2+)	Ca₂Fe²⁺Fe³⁺₂[Si₂O₆OH][SiO₄](OH)₂(OH)	Mon. 2/m
9.BG.20	Okhotskite	Ca₂Mn²⁺Mn³⁺₂[Si₂O₆OH][SiO₄](OH)₂(OH)	Mon. 2/m
9.BG.20	Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂(Si₂O₇)(SiO₄)(OH,O)₂ · H₂O	Mon. 2/m
9.BG.20	Pumpellyite-(Fe3+)	Ca₂Fe³⁺Al₂(Si₂O₇)(SiO₄)(OH,O)₂ · H₂O	Mon. 2/m
9.BG.20	Pumpellyite-(Mg)	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂ · H₂O	Mon. 2/m
9.BG.20	Pumpellyite-(Mn2+)	Ca₂Mn²⁺Al₂(Si₂O₇)(SiO₄)(OH)₂ · H₂O	Mon. 2/m
9.BG.20	Shuiskite-(Mg)	Ca₂MgCr³⁺₂[Si₂O₆OH][SiO₄](OH)₂(OH)	Mon. 2/m
9.BG.20	Julgoldite-(Fe3+)	Ca₂Fe³⁺Fe³⁺₂[Si₂O₆OH][SiO₄](OH)₂O	Mon.
9.BG.20	Pumpellyite-(Al)	Ca₂Al₃(Si₂O₇)(SiO₄)(OH,O)₂ · H₂O	Mon. 2/m
9.BG.20	Poppiite	Ca₂V³⁺V³⁺₂[Si₂O₆OH][SiO₄](OH)₂O	Mon. 2/m : B2/m
9.BG.20	Julgoldite-(Mg)	Ca₂MgFe³⁺₂[Si₂O₆OH][SiO₄](OH)₂(OH)	Mon.
9.BG.25	Ganomalite	Pb₉Ca₅Mn(Si₂O₇)₄(SiO₄)O	Hex. 6 : P6
9.BG.25	Wayneburnhamite	Pb₉Ca₆(Si₂O₇)₃(SiO₄)₃	Hex. 6 : P6
9.BG.30	Rustumite	Ca₁₀(Si₂O₇)₂(SiO₄)(OH)₂Cl₂	Mon. 2/m : B2/b
9.BG.35	Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35	Wiluite	Ca₁₉MgAl₄(Al,Mg)₈(B,◻)₄◻[Si₂O₇]₄[(SiO₄)₁₀]O(O,OH)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35	Manganvesuvianite	Ca₁₉Mn³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉	Tet. 4/m : P4/n
9.BG.35	Fluorvesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(F,OH)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35	Cyprine	Ca₁₉Cu²⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀](OH)(OH)₉	Tet. 4/m : P4/n
9.BG.35	Hongheite	Ca₁₉Fe²⁺Al₄(Fe³⁺,Mg)₈(◻₄)B[Si₂O₇]₄[(SiO₄)₁₀]O(OH,O)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35	Milanriederite	(Ca₁₈[REE])Fe³⁺Al₄(Mg₄Al₄)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀](OH)(OH)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35	Manaevite-(Ce)	(Ca₁₃Ce₄[H₂O]₂)Mg(Al₃Mg)(Mg₃Ti₃Fe³⁺₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₈(H₄O₄)₂]O(OH)₉	Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.40	Vyuntspakhkite-(Y)	(Y,Yb)₄Al_2.5-1.5(Si,Al)_1.5-2.5(SiO₄)₄O(OH)₇	Mon.
9.BG.45	Dellaite	Ca₆Si₃O₁₁(OH)₂	Tric.
9.BG.50	Gatelite-(Ce)	CaCe₃(AlAl₂Mg)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/b
9.BG.50	Perbøeite-(Ce)	CaCe₃(AlAl₂Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/m
9.BG.50	Ferriperbøeite-(La)	CaLa₃(Fe³⁺Al₂Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/m
9.BG.50	Perbøeite-(La)	CaLa₃(AlAl₂Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂	Mon. 2/m : P2₁/m
9.BG.55	Västmanlandite-(Ce)	CaCe₃(MgAl₂Mg)[Si₂O₇][SiO₄]₃F(OH)₂	Mon. 2/m : P2₁/m
9.BG.60	Radekškodaite-(La)	(CaLa₅)(Al₄Fe²⁺)[Si₂O₇][SiO₄]₅O(OH)₃	Mon. 2/m : P2₁/m
9.BG.60	Radekškodaite-(Ce)	(CaCe₅)(Al₄Fe²⁺)[Si₂O₇][SiO₄]₅O(OH)₃	Mon. 2/m : P2₁/m
9.BG.60	Radekškodaite Group	(CaM₅)([Fe³⁺Al₃]Fe²⁺)[Si₂O₇][SiO₄]₅O(OH)₃

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 MacfalliteHide

mindat.org URL:

https://www.mindat.org/min-2508.html
Please feel free to link to this page.

Search Engines:

Look for Macfallite on Google

Look for Macfallite images on Google

Look for Macfallite on Bing

Look for Macfallite images on Bing

Look for Macfallite on DuckDuckGo

Look for Macfallite images on DuckDuckGo

Look for Macfallite in the Rock H. Currier Digital Library

External Links:

Look for Macfallite on Webmineral

Look for Macfallite on Wikipedia

Look for Macfallite 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

Fine Minerals from Weinrich Minerals, Inc.

Buy rare minerals from Excalibur Minerals

Wilensky Exquisite Minerals

Buy from McDougall Minerals

Blue Gems Australian & International

High-end worldwide specimens & outstanding customer service

The Arkenstone - Fine Minerals

References for MacfalliteHide

Reference List:

Moore, P.B., Ito, J., and Steele, I.M. (1979) Macfallite and orientite: calcium manganese (III) silicates from upper Michigan. Mineralogical Magazine: 43: 325-331.

Fleischer, Michael, Cabri, Louis J., Pabst, Adolf (1980) New Mineral Names. American Mineralogist, 65 (3-4) 406-408

Moore, P.B., J. Shen, and T. Araki (1985) Crystal chemistry of the 2∞[M 3+ 2ф2(TO4)2] sheet: structural principles and crystal structures of ruizite, macfallite and orientite. American Mineralogist: 70: 171-181.

Neues Jahrbuch für Mineralogie, Monatshefte (1989): 455.

Palenzona, A. (1990) Orientite e MacFallite di Cerchiara (La Spezia). Rivista Mineralogica Italiana, Milano, Fasc. 2: 111-114.

Nagashima, Mariko; Rahmoun, Nouri-Said; Alekseev, Evgeny V.; Geiger, Charles A.; Armbruster, Thomas; Akasaka, Masahide (2008) Crystal chemistry of macfallite: relationships to sursassite and pumpellyite. American Mineralogist: 93: 1851-1857.

Nagashima, M. (2011) Pumpellyite-, sursassite-, and epidote-type structures: common principles-individual features. Journal of Mineralogical and Petrological Sciences: 106: 211-222.

Ciriotti, M.E., Camara, F., Bittarello, E., Ambrino, P. (2013) Macfallite: secondo ritrovamento italiano a Prabornaz. Micro: 11: 50-59.

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

Localities for MacfalliteHide

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
Aosta Valley Saint-Marcel ⓘ Praborna Mine	Frank K. Mazdab collection (see https://www.rockptx.com/fkm-151-to-fkm-175/#FKM-171 for analytical data) +1 other reference
Liguria Genoa Ne Statale ⓘ Scrava Mine (Statale Mine)	//doi.org/10.57635/MICRO.2023.21.7
La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine	Palenzona (1990)

Japan
Hokkaidō Prefecture Okhotsk Subprefecture Tokoro District ⓘ Wakasa mine	Miyajima et al. (1994)

Serbia
Central Serbia Bor District Bor ⓘ Brestovačka Banja	Pačevski et al. (2016) +1 other reference

USA (TL)
Michigan Keweenaw County Grant Township Copper Harbor ⓘ Manganese Mine (TL)	Moore et al. (1979) +2 other references
New Jersey Sussex County Franklin Franklin Mine ⓘ Buckwheat dump mineral collecting site	Steven Kuitems

Macfallite

About MacfalliteHide

Unique IdentifiersHide

IMA Classification of MacfalliteHide

Classification of MacfalliteHide

Mineral SymbolsHide

Physical Properties of MacfalliteHide

Optical Data of MacfalliteHide

Chemistry of MacfalliteHide

Crystallography of MacfalliteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of MacfalliteHide

Synonyms of MacfalliteHide

Other Language Names for MacfalliteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for MacfalliteHide

References for MacfalliteHide

Localities for MacfalliteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide