A member of the Allanite Subgroup of the Epidote Group.

Dissakisite-(La) is the Mg-analogue of allanite-(La), and it also forms a continuous series with dissakisite-(Ce). Like the latter mineral, it can be found in Fe-poor environments.

Unique IdentifiersHide

Mindat ID:

27401

Long-form identifier:

mindat:1:1:27401:8

GUID
(UUID V4):

37cf5b60-1f2d-43ac-8dbb-9d712b74b123

IMA Classification of Dissakisite-(La)Hide

IMA status:

Approved

IMA Formula:

CaLa(Al₂Mg)[Si₂O₇][SiO₄]O(OH)

Approval year:

2003

Classification of Dissakisite-(La)Hide

Strunz-mindat (2024):

9.BG.05

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

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
Dis-La	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Dis	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of Dissakisite-(La)Hide

Lustre:

Vitreous

Transparency:

Translucent

Colour:

Black to very dark brown.

Streak:

Grey-greenish

Hardness:

6½ - 7 on Mohs scale

Tenacity:

Brittle

Cleavage:

Imperfect/Fair
(001)

Fracture:

Conchoidal

Density:

3.79 g/cm³ (Measured) 3.84 g/cm³ (Calculated)

Chemistry of Dissakisite-(La)Hide

Mindat Formula:

(CaLa)(AlAlMg)O[Si₂O₇][SiO₄](OH)

Elements listed:

Al, Ca, H, La, Mg, O, Si - search for minerals with similar chemistry

Common Impurities:

Cr,Fe,Th,Ti

Crystallography of Dissakisite-(La)Hide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/m

Cell Parameters:

a = 8.9616 Å, b = 5.7265 Å, c = 10.2353 Å
α = 115.193°

Ratio:

a:b:c = 1.565 : 1 : 1.787

Unit Cell V:

475.3 Å³

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	Year	Temp (K)
0003995	Dissakisite-(La)	Lavina B, Carbonin S, Russo U, Tumiati S (2006) The crystal structure of dissakisite-(La) and structural variations after annealing of radiation damage American Mineralogist 91 104-110	2006	293
0003996	Dissakisite-(La)	Lavina B, Carbonin S, Russo U, Tumiati S (2006) The crystal structure of dissakisite-(La) and structural variations after annealing of radiation damage American Mineralogist 91 104-110	2006	293
0003997	Dissakisite-(La)	Lavina B, Carbonin S, Russo U, Tumiati S (2006) The crystal structure of dissakisite-(La) and structural variations after annealing of radiation damage American Mineralogist 91 104-110	2006	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Dissakisite-(La)'
loop_
_publ_author_name
'Lavina B'
'Carbonin S'
'Russo U'
'Tumiati S'
_journal_name_full 'American Mineralogist'
_journal_volume 91 
_journal_year 2006
_journal_page_first 104
_journal_page_last 110
_publ_section_title
;
 The crystal structure of dissakisite-(La) and structural variations
 after annealing of radiation damage
 Sample: untreated DISS3
;
_database_code_amcsd 0003995
_chemical_formula_sum 'Ca1.195 Th.09 Fe.404 La.315 Mn.009 U.003 Na.002 Er.001 Ce.262 Nd.038 Pr.019 Sr.01 Sm.002 Gd.001 Al1.836 Cr.148 Ti.03 V.008 Sc.002 Ga.001 Mg.622 Zn.015 Ni.01 Si2.97 P.009 O13 H'
_cell_length_a 8.959
_cell_length_b 5.7226
_cell_length_c 10.232
_cell_angle_alpha 90
_cell_angle_beta 115.19
_cell_angle_gamma 90
_cell_volume 474.695
_exptl_crystal_density_diffrn      3.857
_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
CaA1   0.75710   0.75000   0.15068   0.79200   0.02050
ThA1   0.75710   0.75000   0.15068   0.09000   0.02050
FeA1   0.75710   0.75000   0.15068   0.05300   0.02050
LaA1   0.75710   0.75000   0.15068   0.05000   0.02050
MnA1   0.75710   0.75000   0.15068   0.00900   0.02050
UA1   0.75710   0.75000   0.15068   0.00300   0.02050
NaA1   0.75710   0.75000   0.15068   0.00200   0.02050
ErA1   0.75710   0.75000   0.15068   0.00100   0.02050
CaA2   0.59801   0.75000   0.42706   0.40300   0.02130
LaA2   0.59801   0.75000   0.42706   0.26500   0.02130
CeA2   0.59801   0.75000   0.42706   0.26200   0.02130
NdA2   0.59801   0.75000   0.42706   0.03800   0.02130
PrA2   0.59801   0.75000   0.42706   0.01900   0.02130
SrA2   0.59801   0.75000   0.42706   0.01000   0.02130
SmA2   0.59801   0.75000   0.42706   0.00200   0.02130
GdA2   0.59801   0.75000   0.42706   0.00100   0.02130
AlM1   0.00000   0.00000   0.00000   0.81300   0.01320
CrM1   0.00000   0.00000   0.00000   0.14800   0.01320
TiM1   0.00000   0.00000   0.00000   0.03000   0.01320
VM1   0.00000   0.00000   0.00000   0.00800   0.01320
ScM1   0.00000   0.00000   0.00000   0.00200   0.01320
GaM1   0.00000   0.00000   0.00000   0.00100   0.01320
AlM2   0.00000   0.00000   0.50000   0.94800   0.01110
FeM2   0.00000   0.00000   0.50000   0.05200   0.01110
MgM3   0.29890   0.25000   0.21780   0.62200   0.01770
FeM3   0.29890   0.25000   0.21780   0.29900   0.01770
AlM3   0.29890   0.25000   0.21780   0.05400   0.01770
ZnM3   0.29890   0.25000   0.21780   0.01500   0.01770
NiM3   0.29890   0.25000   0.21780   0.01000   0.01770
Si1   0.33760   0.75000   0.04030   0.99000   0.01130
Al1   0.33760   0.75000   0.04030   0.00700   0.01130
P1   0.33760   0.75000   0.04030   0.00300   0.01130
Si2   0.68430   0.25000   0.27640   0.99000   0.01310
Al2   0.68430   0.25000   0.27640   0.00700   0.01310
P2   0.68430   0.25000   0.27640   0.00300   0.01310
Si3   0.18590   0.75000   0.32030   0.99000   0.01050
Al3   0.18590   0.75000   0.32030   0.00700   0.01050
P3   0.18590   0.75000   0.32030   0.00300   0.01050
O1   0.23340   0.99100   0.03220   1.00000   0.02010
O2   0.30840   0.97710   0.35960   1.00000   0.01930
O3   0.79350   0.01440   0.33730   1.00000   0.02290
O4   0.05600   0.25000   0.12920   1.00000   0.01590
O5   0.04560   0.75000   0.14750   1.00000   0.01400
O6   0.06840   0.75000   0.40840   1.00000   0.01660
O7   0.51100   0.75000   0.17800   1.00000   0.02220
O8   0.53310   0.25000   0.31890   1.00000   0.03640
O9   0.61880   0.25000   0.10060   1.00000   0.03140
O10   0.08430   0.25000   0.43060   1.00000   0.01780
H   0.15900   0.25000   0.30500   1.00000   0.05000
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
CaA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
ThA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
FeA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
LaA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
MnA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
UA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
NaA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
ErA1 0.03020 0.01717 0.02021 0.00000 0.01661 0.00000
CaA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
LaA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
CeA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
NdA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
PrA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
SrA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
SmA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
GdA2 0.01874 0.02646 0.01607 0.00000 0.00485 0.00000
AlM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
CrM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
TiM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
VM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
ScM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
GaM1 0.01332 0.01055 0.01394 -0.00040 0.00402 -0.00019
AlM2 0.01097 0.00956 0.01204 0.00022 0.00428 -0.00081
FeM2 0.01097 0.00956 0.01204 0.00022 0.00428 -0.00081
MgM3 0.01641 0.01337 0.01556 0.00000 -0.00068 0.00000
FeM3 0.01641 0.01337 0.01556 0.00000 -0.00068 0.00000
AlM3 0.01641 0.01337 0.01556 0.00000 -0.00068 0.00000
ZnM3 0.01641 0.01337 0.01556 0.00000 -0.00068 0.00000
NiM3 0.01641 0.01337 0.01556 0.00000 -0.00068 0.00000
Si1 0.01169 0.01020 0.01094 0.00000 0.00378 0.00000
Al1 0.01169 0.01020 0.01094 0.00000 0.00378 0.00000
P1 0.01169 0.01020 0.01094 0.00000 0.00378 0.00000
Si2 0.01419 0.01087 0.01413 0.00000 0.00603 0.00000
Al2 0.01419 0.01087 0.01413 0.00000 0.00603 0.00000
P2 0.01419 0.01087 0.01413 0.00000 0.00603 0.00000
Si3 0.00982 0.01227 0.01024 0.00000 0.00518 0.00000
Al3 0.00982 0.01227 0.01024 0.00000 0.00518 0.00000
P3 0.00982 0.01227 0.01024 0.00000 0.00518 0.00000
O1 0.01485 0.01519 0.03112 0.00298 0.01072 0.00404
O2 0.02070 0.02209 0.01697 -0.00789 0.00972 -0.00410
O3 0.02259 0.01304 0.02262 0.00164 -0.00036 -0.00212
O4 0.01544 0.01516 0.01551 0.00000 0.00497 0.00000
O5 0.01496 0.01661 0.00959 0.00000 0.00433 0.00000
O6 0.02150 0.01537 0.01895 0.00000 0.01438 0.00000
O7 0.01817 0.02273 0.01650 0.00000 -0.00136 0.00000
O8 0.03153 0.04471 0.04224 0.00000 0.02456 0.00000
O9 0.03736 0.04419 0.01715 0.00000 0.01596 0.00000
O10 0.01781 0.01461 0.02443 0.00000 0.01245 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.926 Å	(100)
2.860 Å	(53)
2.553 Å	(51)
3.526 Å	(49)
2.699 Å	(44)

Comments:

Hochwart - Vedetta Alta, Italy. Data from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust	>4.50
8 : Mafic igneous rocks
Stage 4a: Earth’s earliest continental crust	>4.4-3.0
19 : Granitic intrusive rocks
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of Dissakisite-(La)Hide

Type Locality:

ⓘ Hochwart - Vedetta Alta, Ulten (Ultimo), Burggrafenamt (Burgraviato), South Tyrol, Trentino-Alto Adige (Trentino-South Tyrol), Italy

General Appearance of Type Material:

Up to 2.5cm-sized black to very dark brown anhedral nodules, thick blades and smaller grains.

Place of Conservation of Type Material:

(-) Muséum National d'Histoire Naturelle, Paris, France (203.133)
(-) Museo di Mineralogia e Petrologia dell'Università di Padova, Padova, Italy

Geological Setting of Type Material:

In Alpine-type peridotite, under eclogite-facies conditions.

Associated Minerals at Type Locality:

Zircon	Uraninite	Thorite	Thorianite	Spinel
Pyroxene Group	Phlogopite	Pentlandite	Olivine Group	Dolomite
Copper Sulphides	Clinochlore	Calcite	Apatite	Amphibole Supergroup

Synonyms of Dissakisite-(La)Hide

IMA2003-007

Dissakisite (in part)

Other Language Names for Dissakisite-(La)Hide

German:Dissakisit-(La)

Russian:Диссакисит-(La)

Relationship of Dissakisite-(La) to other SpeciesHide

Member of:

Allanite Group > Epidote Supergroup

Other Members of this group:

Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Allanite-(La)	(CaLa)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Allanite-(Nd)	(CaNd)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Allanite-(Sm)	(CaSm)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Allanite-(Y)	(CaY)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon.
Androsite-(Ce)	(Mn²⁺Ce)(AlAlMn²⁺)O[Si₂O₇][SiO₄](OH)
Dissakisite-(Ce)	(CaCe)(AlAlMg)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriakasakaite-(Ce)	(CaCe)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriakasakaite-(La)	(CaLa)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriallanite-(Ce)	(CaCe)(Fe³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriallanite-(La)	(CaLa)(Fe³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriandrosite-(Ce)	(Mn²⁺Ce)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Ferriandrosite-(La)	(Mn²⁺La)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Manganiakasakaite-(La)	(CaLa)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Manganiandrosite-(Ce)	(Mn²⁺Ce)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Manganiandrosite-(La)	(Mn²⁺La)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Uedaite-(Ce)	(Mn²⁺Ce)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
UM1989-32-SiO:AlCaFeHREE	(Ca_0.5◻_0.5REE)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
UM1994-25-SiO:AlCaFeHREEV	(CaREE)(V³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)
UM2006-14-SiO:AlCaHMnREE	(CaCe)(AlAlMn²⁺)O[Si₂O₇][SiO₄](OH)
Unnamed (Mg-analogue of Ferriallanite-(Ce))	(CaCe)(Fe³⁺AlMg)O[Si₂O₇][SiO₄](OH)
Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))	(CaCe)(Mn³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)
Vanadoallanite-(La)	(CaLa)(V³⁺AlFe²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
Vanadoandrosite-(Ce)	(Mn²⁺Ce)(V³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Dissakisite-(La) associated with Bastnäsite-(La)	La(CO₃)F
1 photo of Dissakisite-(La) associated with Britholite-(Ce)	(Ce,Ca)₅(SiO₄)₃OH

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	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.05b	Ferriakasakaite-(La)	(CaLa)(Fe³⁺AlMn²⁺)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.05	Ferriandrosite-(Ce)	(Mn²⁺Ce)(Fe³⁺AlMn²⁺)O[Si₂O₇][SiO₄](OH)	Mon. 2/m : P2₁/m
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.05b	Allanite-(Sm)	(CaSm)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)	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	Macfallite	Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃	Mon. 2/m : P2₁/m
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-(Ce)	CaCe₃(Fe³⁺Al₂Fe²⁺)[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

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References for Dissakisite-(La)Hide

Reference List:

Tumiati, S., Godard, G., Martin, S., Nimis, P. (2005): Dissakisite-(La), a new end-member of the epidote group from the Ulten peridotites (Italian Eastern Alps): Evidence of mantle-crust interactions in subduction zones. Geophysical Research Abstracts, 7, 00616.

Tumiati, S. (2005) Dissakisite-(La) from the Ulten zone peridotite (Italian Eastern Alps): A new end-member of the epidote group. American Mineralogist, 90 (7) 1177-1185 doi:10.2138/am.2005.1710

Lavina, B., Carbonin, S., Russo, U., Tumiati, S. (2006): The crystal structure of dissakisite-(La), a new member of the epidote group, and its structural variations after annealing of radiation damage. American Mineralogist, 91, 104-110.

Tumiati, S., Carbonin, S., Mair, V., Russo, U. (2006): Dissakisite-(La). Nuova specie dalla Val d'Ultimo, Alto Adige. Rivista Mineralogica Italiana, 30(4), 244-247.

(2023) Dissakisite-(La) Handbook of Mineralogy. Mineralogical Society of America

Localities for Dissakisite-(La)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

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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.


Italy (TL)
Trentino-Alto Adige (Trentino-South Tyrol) South Tyrol Burggrafenamt (Burgraviato) Ulten (Ultimo) ⓘ Hochwart - Vedetta Alta (TL)	Am Min 90:1177-1185

Russia
Chelyabinsk Oblast Kyshtym ⓘ Mochalin Log	Pavel.M. Kartashov (n.d.) +2 other references

Slovakia
Bratislava Region Pezinok District Pezinok ⓘ Rybníček	Bačík P. & Uher P. (La)

Dissakisite-(La)

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