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

Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Contact Us Advertise on Mindat

Donate to Mindat Corporate Sponsorship Sponsor a Page Sponsored Pages Mindat Advertisers Advertise on Mindat

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 Explore Fossils

Minerals by Properties Minerals by Chemistry Mineral Visual Explorer 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 Time Machine

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

Hydroxycalciopyrochlore

A valid IMA mineral species

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

Photos of Hydroxycalciopyrochlore (14)Discuss Hydroxycalciopyrochlore

Hydroxycalciopyrochlore Gallery Search Photos of Hydroxycalciopyrochlore

Edit Hydroxycalciopyrochlore Add Synonym Edit CIF structures Clear Cache

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hydroxycalciopyrochlore

In den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Hide all sections | Show all sections

About HydroxycalciopyrochloreHide

Formula:

(Ca,Na,U,◻)₂(Nb,Ti)₂O₆(OH)

Colour:

Brownish-black, greenish-black and black

Lustre:

Greasy

Hardness:

5 - 6

Specific Gravity:

5.10

Crystal System:

Isometric

Member of:

Pyrochlore Group > Pyrochlore Supergroup

Type Locality:

ⓘ Maoniuping Mine, Mianning County, Liangshan Yi, Sichuan, China

The Ca analogue of hydroxymanganopyrochlore and hydroxyplumbopyrochlore. The OH analogue of fluorcalciopyrochlore. Chemically related to charleshatchettite and 'Unnamed (MSH UK-56)'.

Unique IdentifiersHide

Mindat ID:

40340

Long-form identifier:

mindat:1:1:40340:7

IMA Classification of HydroxycalciopyrochloreHide

IMA status:

Approved

IMA Formula:

(Ca,Na,U⁴⁺,◻)₂(Nb⁵⁺,Ti⁴⁺)₂O₆(OH)

Approval year:

2011

First published:

2014

Classification of HydroxycalciopyrochloreHide

Strunz-mindat (2026):

4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra

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 for Standard
Hcpcl	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 HydroxycalciopyrochloreHide

Lustre:

Greasy

Transparency:

Translucent

Colour:

Brownish-black, greenish-black and black

Comment:

Colors on fresh sections

Streak:

Brown streak

Hardness:

5 - 6 on Mohs scale

Hardness:

VHN₁₀₀=572 - Vickers

Cleavage:

None Observed
Metamict

Parting:

None observed

Fracture:

Conchoidal

Density:

5.10(3) g/cm³ (Measured) 5.15 g/cm³ (Calculated)

Comment:

Measured by hydrostatic weighing

Chemistry of HydroxycalciopyrochloreHide

Mindat Formula:

(Ca,Na,U,◻)₂(Nb,Ti)₂O₆(OH)

Element Weights:

Element	% weight
Nb	49.031 %
O	29.553 %
Ca	21.151 %
H	0.266 %

Calculated from ideal end-member formula.

Elements listed:

Ca, H, Na, Nb, O, Ti, U - search for minerals with similar chemistry

Common Impurities:

Na,U,Ti,Ce,F

Chemical AnalysisHide

Empirical formulas:

Sample ID	Empirical Formula
1	(Ca_1.08Na_0.67U⁴⁺_0.03Ce_0.03La_0.02)(Nb_1.74Ti_0.21Ta_0.05(O_6.00(OH)_0.89·nH₂O

Sample references:

ID	Locality	Reference	Notes
1	Vishnevye Mountains, Chelyabinsk Oblast, Russia	Chukanov, Nikita V. (2014) Springer Geochemistry/Mineralogy - Infrared spectra of mineral species. Springer Netherlands. doi:10.1007/978-94-007-7128-4p.496

Crystallography of HydroxycalciopyrochloreHide

Crystal System:

Isometric

Class (H-M):

m3m(4/m32/m) - Hexoctahedral

Space Group:

Fd3m

Cell Parameters:

a = 10.381(4) Å

Unit Cell V:

1118.7 Å³

Morphology:

Mostly as octahedra, and less often as dodecahedra and tetrahexahedra or combinations thereof. Some occur with an allotriomorphic habit with a thick triangular tabular form.

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)
0020233	Hydroxycalciopyrochlore	Yang G, Li G, Xiong M, Pan B, Yan C (2014) Hydroxycalciopyrochlore, a new mineral species from Sichuan, China Acta Geologica Sinica 88 748-753		2014	Maoniuping mine, Mianning County, Xichang prefecture, Sichuan Province, China	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Hydroxycalciopyrochlore'
loop_
_publ_author_name
'Yang G'
'Li G'
'Xiong M'
'Pan B'
'Yan C'
_journal_name_full 'Acta Geologica Sinica'
_journal_volume 88 
_journal_year 2014
_journal_page_first 748
_journal_page_last 753
_publ_section_title
;
 Hydroxycalciopyrochlore, a new mineral species from Sichuan, China
;
_database_code_amcsd 0020233
_chemical_compound_source 'Maoniuping mine, Mianning County, Xichang prefecture, Sichuan Province, China'
_chemical_formula_sum 'Ca.74 Na.58 U.4 Ce.05 Fe.02 (Nb1.15 Ti.8 Ta.03 Al.01 Mg.01) O6.91 (F.09 H.91)'
_cell_length_a 10.381
_cell_length_b 10.381
_cell_length_c 10.381
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1118.710
_exptl_crystal_density_diffrn      4.876
_symmetry_space_group_name_H-M 'F d 3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2+y,1/2+z'
  '1/2+x,y,1/2+z'
  '1/2+x,1/2+y,z'
  '3/4+z,1/2-x,1/4+y'
  '3/4+z,-x,3/4+y'
  '1/4+z,1/2-x,3/4+y'
  '1/4+z,-x,1/4+y'
  '3/4-y,1/2+z,1/4-x'
  '3/4-y,+z,3/4-x'
  '1/4-y,1/2+z,3/4-x'
  '1/4-y,+z,1/4-x'
  '3/4+x,1/2-y,1/4+z'
  '3/4+x,-y,3/4+z'
  '1/4+x,1/2-y,3/4+z'
  '1/4+x,-y,1/4+z'
  '3/4-z,1/2+x,1/4-y'
  '3/4-z,+x,3/4-y'
  '1/4-z,1/2+x,3/4-y'
  '1/4-z,+x,1/4-y'
  '3/4+y,1/2-z,1/4+x'
  '3/4+y,-z,3/4+x'
  '1/4+y,1/2-z,3/4+x'
  '1/4+y,-z,1/4+x'
  '3/4-x,1/2+y,1/4-z'
  '3/4-x,+y,3/4-z'
  '1/4-x,1/2+y,3/4-z'
  '1/4-x,+y,1/4-z'
  '1/2+x,3/4-z,1/4-y'
  '1/2+x,1/4-z,3/4-y'
  '+x,3/4-z,3/4-y'
  '+x,1/4-z,1/4-y'
  '1/2-z,3/4+y,1/4+x'
  '1/2-z,1/4+y,3/4+x'
  '-z,3/4+y,3/4+x'
  '-z,1/4+y,1/4+x'
  '1/2+y,3/4-x,1/4-z'
  '1/2+y,1/4-x,3/4-z'
  '+y,3/4-x,3/4-z'
  '+y,1/4-x,1/4-z'
  '1/2-x,3/4+z,1/4+y'
  '1/2-x,1/4+z,3/4+y'
  '-x,3/4+z,3/4+y'
  '-x,1/4+z,1/4+y'
  '1/2+z,3/4-y,1/4-x'
  '1/2+z,1/4-y,3/4-x'
  '+z,3/4-y,3/4-x'
  '+z,1/4-y,1/4-x'
  '1/2-y,3/4+x,1/4+z'
  '1/2-y,1/4+x,3/4+z'
  '-y,3/4+x,3/4+z'
  '-y,1/4+x,1/4+z'
  'x,1/2+z,1/2+y'
  'x,+z,+y'
  '1/2+x,1/2+z,+y'
  '1/2+x,+z,1/2+y'
  '-z,1/2-y,1/2-x'
  '-z,-y,-x'
  '1/2-z,1/2-y,-x'
  '1/2-z,-y,1/2-x'
  'y,1/2+x,1/2+z'
  'y,+x,+z'
  '1/2+y,1/2+x,+z'
  '1/2+y,+x,1/2+z'
  '-x,1/2-z,1/2-y'
  '-x,-z,-y'
  '1/2-x,1/2-z,-y'
  '1/2-x,-z,1/2-y'
  'z,1/2+y,1/2+x'
  'z,+y,+x'
  '1/2+z,1/2+y,+x'
  '1/2+z,+y,1/2+x'
  '-y,1/2-x,1/2-z'
  '-y,-x,-z'
  '1/2-y,1/2-x,-z'
  '1/2-y,-x,1/2-z'
  '3/4+z,1/4+x,1/2-y'
  '3/4+z,3/4+x,-y'
  '1/4+z,1/4+x,-y'
  '1/4+z,3/4+x,1/2-y'
  '3/4-y,1/4-z,1/2+x'
  '3/4-y,3/4-z,+x'
  '1/4-y,1/4-z,+x'
  '1/4-y,3/4-z,1/2+x'
  '3/4+x,1/4+y,1/2-z'
  '3/4+x,3/4+y,-z'
  '1/4+x,1/4+y,-z'
  '1/4+x,3/4+y,1/2-z'
  '3/4-z,1/4-x,1/2+y'
  '3/4-z,3/4-x,+y'
  '1/4-z,1/4-x,+y'
  '1/4-z,3/4-x,1/2+y'
  '3/4+y,1/4+z,1/2-x'
  '3/4+y,3/4+z,-x'
  '1/4+y,1/4+z,-x'
  '1/4+y,3/4+z,1/2-x'
  '3/4-x,1/4-y,1/2+z'
  '3/4-x,3/4-y,+z'
  '1/4-x,1/4-y,+z'
  '1/4-x,3/4-y,1/2+z'
  '-z,3/4+x,3/4+y'
  '-z,1/4+x,1/4+y'
  '1/2-z,3/4+x,1/4+y'
  '1/2-z,1/4+x,3/4+y'
  'y,3/4-z,3/4-x'
  'y,1/4-z,1/4-x'
  '1/2+y,3/4-z,1/4-x'
  '1/2+y,1/4-z,3/4-x'
  '-x,3/4+y,3/4+z'
  '-x,1/4+y,1/4+z'
  '1/2-x,3/4+y,1/4+z'
  '1/2-x,1/4+y,3/4+z'
  'z,3/4-x,3/4-y'
  'z,1/4-x,1/4-y'
  '1/2+z,3/4-x,1/4-y'
  '1/2+z,1/4-x,3/4-y'
  '-y,3/4+z,3/4+x'
  '-y,1/4+z,1/4+x'
  '1/2-y,3/4+z,1/4+x'
  '1/2-y,1/4+z,3/4+x'
  'x,3/4-y,3/4-z'
  'x,1/4-y,1/4-z'
  '1/2+x,3/4-y,1/4-z'
  '1/2+x,1/4-y,3/4-z'
  '1/4-x,1/2+z,3/4-y'
  '1/4-x,+z,1/4-y'
  '3/4-x,1/2+z,1/4-y'
  '3/4-x,+z,3/4-y'
  '1/4+z,1/2-y,3/4+x'
  '1/4+z,-y,1/4+x'
  '3/4+z,1/2-y,1/4+x'
  '3/4+z,-y,3/4+x'
  '1/4-y,1/2+x,3/4-z'
  '1/4-y,+x,1/4-z'
  '3/4-y,1/2+x,1/4-z'
  '3/4-y,+x,3/4-z'
  '1/4+x,1/2-z,3/4+y'
  '1/4+x,-z,1/4+y'
  '3/4+x,1/2-z,1/4+y'
  '3/4+x,-z,3/4+y'
  '1/4-z,1/2+y,3/4-x'
  '1/4-z,+y,1/4-x'
  '3/4-z,1/2+y,1/4-x'
  '3/4-z,+y,3/4-x'
  '1/4+y,1/2-x,3/4+z'
  '1/4+y,-x,1/4+z'
  '3/4+y,1/2-x,1/4+z'
  '3/4+y,-x,3/4+z'
  '3/4-x,3/4-z,y'
  '3/4-x,1/4-z,1/2+y'
  '1/4-x,3/4-z,1/2+y'
  '1/4-x,1/4-z,y'
  '3/4+z,3/4+y,-x'
  '3/4+z,1/4+y,1/2-x'
  '1/4+z,3/4+y,1/2-x'
  '1/4+z,1/4+y,-x'
  '3/4-y,3/4-x,z'
  '3/4-y,1/4-x,1/2+z'
  '1/4-y,3/4-x,1/2+z'
  '1/4-y,1/4-x,z'
  '3/4+x,3/4+z,-y'
  '3/4+x,1/4+z,1/2-y'
  '1/4+x,3/4+z,1/2-y'
  '1/4+x,1/4+z,-y'
  '3/4-z,3/4-y,x'
  '3/4-z,1/4-y,1/2+x'
  '1/4-z,3/4-y,1/2+x'
  '1/4-z,1/4-y,x'
  '3/4+y,3/4+x,-z'
  '3/4+y,1/4+x,1/2-z'
  '1/4+y,3/4+x,1/2-z'
  '1/4+y,1/4+x,-z'
  '-z,-x,-y'
  '-z,1/2-x,1/2-y'
  '1/2-z,-x,1/2-y'
  '1/2-z,1/2-x,-y'
  'y,z,x'
  'y,1/2+z,1/2+x'
  '1/2+y,z,1/2+x'
  '1/2+y,1/2+z,x'
  '-x,-y,-z'
  '-x,1/2-y,1/2-z'
  '1/2-x,-y,1/2-z'
  '1/2-x,1/2-y,-z'
  'z,x,y'
  'z,1/2+x,1/2+y'
  '1/2+z,x,1/2+y'
  '1/2+z,1/2+x,y'
  '-y,-z,-x'
  '-y,1/2-z,1/2-x'
  '1/2-y,-z,1/2-x'
  '1/2-y,1/2-z,-x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ca1   0.00000   0.50000   0.50000   0.37000
Na1   0.00000   0.50000   0.50000   0.29000
U1   0.00000   0.50000   0.50000   0.20000
Ce1   0.00000   0.50000   0.50000   0.02500
Fe1   0.00000   0.50000   0.50000   0.01000
Nb2   0.75000   0.75000   0.50000   0.57500
Ti2   0.75000   0.75000   0.50000   0.40000
Ta2   0.75000   0.75000   0.50000   0.01500
Al2   0.75000   0.75000   0.50000   0.00500
Mg2   0.75000   0.75000   0.50000   0.00500
O1   0.87500   0.67700   0.37500   1.00000
O-H2   0.87500   0.37500   0.37500   0.91000
F2   0.87500   0.37500   0.37500   0.09000
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
Ca1 0.01500 0.01500 0.01500 -0.00040 -0.00040 -0.00040
Na1 0.01500 0.01500 0.01500 -0.00040 -0.00040 -0.00040
U1 0.01500 0.01500 0.01500 -0.00040 -0.00040 -0.00040
Ce1 0.01500 0.01500 0.01500 -0.00040 -0.00040 -0.00040
Fe1 0.01500 0.01500 0.01500 -0.00040 -0.00040 -0.00040
Nb2 0.02100 0.02100 0.02100 -0.00060 0.00060 0.00060
Ti2 0.02100 0.02100 0.02100 -0.00060 0.00060 0.00060
Ta2 0.02100 0.02100 0.02100 -0.00060 0.00060 0.00060
Al2 0.02100 0.02100 0.02100 -0.00060 0.00060 0.00060
Mg2 0.02100 0.02100 0.02100 -0.00060 0.00060 0.00060
O1 0.02400 0.02400 0.02400 0.00000 0.00900 0.00000
O-H2 0.06000 0.06000 0.06000 0.00000 0.00000 0.00000
F2 0.06000 0.06000 0.06000 0.00000 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.9657 Å	(100)
2.569 Å	(18)
1.8142 Å	(34)
1.5463 Å	(21)
2.5688 Å	(18)

Geological EnvironmentHide

Paragenetic Mode(s):

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

Type Occurrence of HydroxycalciopyrochloreHide

Type Locality:

ⓘ Maoniuping Mine, Mianning County, Liangshan Yi, Sichuan, China

Place of Conservation of Type Material:

China University of Geosciences, Beijng,China, catalogue number M595-22

Geological Setting of Type Material:

Alkali feldspar granite rare-earth ore deposit (26–27 Ma).

Associated Minerals at Type Locality:

Aegirine	Aegirine-augite	Albite	Baryte	Calcite
Celestine	Fluorite	Galena	Magnetite	Parisite-(Ce)
Pyrite	Sphalerite	Thorianite	Thorite	Zircon

Synonyms of HydroxycalciopyrochloreHide

IMA2011-026

Calciopyrochlore (in part)

Other Language Names for HydroxycalciopyrochloreHide

Dutch:Hydroxycalciopyrochloor

German:Hydroxycalciopyrochlor

Relationship of Hydroxycalciopyrochlore to other SpeciesHide

Member of:

Pyrochlore Group > Pyrochlore Supergroup

Other Members of Pyrochlore Group:

Cesiokenopyrochlore	◻Nb₂(O,OH)₆(Cs,◻)	Iso. m3m(4/m32/m) : Fd3m
Fluorcalciopyrochlore	(Ca,Na)₂(Nb,Ti)₂O₆F	Iso.
'Fluorhydropyrochlore'	A possible new species (See discussion in Atencio et al.
'Fluorkenopyrochlore'	(◻,Sr,Ce,Ca,Na)₂(Nb,Ti)₂O₆F
Fluornatropyrochlore	(Na,Pb,Ca,REE,U)₂Nb₂O₆F	Iso. m3m(4/m32/m)
'Fluorplumbopyrochlore'	(Pb,Y,Th,U,Na,Ca)_2-x(Nb,Ti)₂O₆F	Iso.
'Fluorstrontiopyrochlore'	(Sr,◻)₂Nb₂(O,OH)₆F
Hydrokenopyrochlore	(◻,x)₂Nb₂O₆(H₂O,Cs)	Iso. m3m(4/m32/m) : Fd3m
Hydropyrochlore	(H₂O,◻)₂Nb₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
Hydroxykenopyrochlore	(◻,Ce,Ba)₂(Nb,Ti)₂O₆(OH,F)	Iso. m3m(4/m32/m) : Fd3m
Hydroxymanganopyrochlore	(Mn²⁺,Th,Na,Ca,REE)₂(Nb,Ti)₂O₆(OH)	Iso. m3(2/m3)
Hydroxynatropyrochlore	(Na,Ca,Ce)₂Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
Hydroxyplumbopyrochlore	(Pb_1.5◻_0.5)Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
'Kenoplumbopyrochlore'	(Pb,◻)Nb₂O₆(◻,O)
Oxycalciopyrochlore	Ca₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
'Oxynatropyrochlore'	(Na,Ca,U)₂Nb₂O₆(O,OH)
Oxyplumbopyrochlore	Pb₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
'Oxyyttropyrochlore-(Y)'	(Y,◻)₂Nb₂O₆O
'Strontiopyrochlore (of Hogarth 1977)'	(Sr,Ce,Ca)_0.66(Nb,Fe)₂(O,OH)₇
'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'	(Mn,Ca,Y)₂(Sb,Ti)₂O₆(OH)

Common AssociatesHide

Associations Based on Photo Data:

18 photos of Hydroxycalciopyrochlore associated with Quartz	SiO₂
9 photos of Hydroxycalciopyrochlore associated with Microcline	K(AlSi₃O₈)
4 photos of Hydroxycalciopyrochlore associated with Zircon	Zr(SiO₄)
3 photos of Hydroxycalciopyrochlore associated with Sogdianite	K◻₂Zr₂Li₃[Si₁₂O₃₀]
3 photos of Hydroxycalciopyrochlore associated with Fluorcalciopyrochlore	(Ca,Na)₂(Nb,Ti)₂O₆F
2 photos of Hydroxycalciopyrochlore associated with Polylithionite	KLi₂Al(Si₄O₁₀)(F,OH)₂
2 photos of Hydroxycalciopyrochlore associated with Niobophyllite	K₂NaFe²⁺₇(NbTi)[Si₄O₁₂]₂O₂(OH)₄O
2 photos of Hydroxycalciopyrochlore associated with Monazite-(Ce)	Ce(PO₄)
2 photos of Hydroxycalciopyrochlore associated with Willemite	Zn₂SiO₄
2 photos of Hydroxycalciopyrochlore associated with Calcite	CaCO₃

Related Minerals - Strunz-mindat Grouping Hide

4.DH.	Cesiokenopyrochlore	◻Nb₂(O,OH)₆(Cs,◻)	Iso. m3m(4/m32/m) : Fd3m
4.DH.	Roméite Group	A₂(Sb⁵⁺)₂O₆Z
4.DH.	Oxyplumboroméite	Pb₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.	Fluornatropyrochlore	(Na,Pb,Ca,REE,U)₂Nb₂O₆F	Iso. m3m(4/m32/m)
4.DH.	Hydroxykenomicrolite	(◻,Na,Sb³⁺)₂Ta₂O₆(OH,Cs)	Iso. m3m(4/m32/m) : Fd3m
4.DH.	'Fluornatroroméite'	(Na,Ca)₂Sb₂(O,OH)₆F
4.DH.	Oxyyttrobetafite-(Y)	Y₂Ti₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.05	Thorutite	(Th,U,Ca)Ti₂(O,OH)₆	Mon.
4.DH.05	Orthobrannerite	U⁴⁺U⁶⁺Ti₄O₁₂(OH)₂	Orth.
4.DH.05	Brannerite	UTi₂O₆	Mon. 2/m : B2/m
4.DH.10	Kassite	CaTi₂O₄(OH)₂	Mon. 2/m : P2₁/b
4.DH.10	Lucasite-(La)		Mon. 2 : B2
4.DH.10	Lucasite-(Ce)	CeTi₂(O,OH)₆	Mon.
4.DH.15	'Fluorhydropyrochlore'
4.DH.15	Hydrokenoelsmoreite	◻₂W₂O₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Hydroxynatromicrolite'	(Na,Bi³⁺,◻)₂Ta₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroplumboelsmoreite	(Pb,◻)(W,Fe³⁺)₂O₆ · H₂O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydropyrochlore	(H₂O,◻)₂Nb₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'	(Mn,Ca,Y)₂(Sb,Ti)₂O₆(OH)
4.DH.15	Hydroxynatropyrochlore	(Na,Ca,Ce)₂Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydrokenopyrochlore	(◻,x)₂Nb₂O₆(H₂O,Cs)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxybismutomicrolite	(Bi_1.33◻_0.67)_Σ2Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Kenomicrolite	◻₂Ta₂[O₄(OH)₂]◻	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Fluornatromicrolite	(Na_1.5Bi_0.5)Ta₂O₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Oxynatropyrochlore'	(Na,Ca,U)₂Nb₂O₆(O,OH)
4.DH.15	Fluorcalciopyrochlore	(Ca,Na)₂(Nb,Ti)₂O₆F	Iso.
4.DH.15	Oxycalciopyrochlore	Ca₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Fluorstrontiopyrochlore'	(Sr,◻)₂Nb₂(O,OH)₆F
4.DH.15	Oxyplumbopyrochlore	Pb₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Fluorplumbopyrochlore'	(Pb,Y,Th,U,Na,Ca)_2-x(Nb,Ti)₂O₆F	Iso.
4.DH.15	'Bismutomicrolite (of Hogarth 1977)'		Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Bismutopyrochlore (of Chukanov et al.)'	(Bi,Ca,U,Pb)_2-xNb₂(O,OH)₆(OH)	Amor.
4.DH.15	'Kenoplumbopyrochlore'	(Pb,◻)Nb₂O₆(◻,O)
4.DH.15	Hydroxyplumbopyrochlore	(Pb_1.5◻_0.5)Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Stibiomicrolite (of Groat et al.)'
4.DH.15	'Oxyyttropyrochlore-(Y)'	(Y,◻)₂Nb₂O₆O
4.DH.15	'Fluorkenopyrochlore'	(◻,Sr,Ce,Ca,Na)₂(Nb,Ti)₂O₆F
4.DH.15	Hydroxycalciomicrolite	Ca_1.5Ta₂O₆(OH)	Iso. 432 : P4₂32
4.DH.15	'Strontiopyrochlore (of Hogarth 1977)'	(Sr,Ce,Ca)_0.66(Nb,Fe)₂(O,OH)₇
4.DH.15 va	'Alumotungstite'	◻₂W₂O₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Oxycalciobetafite'	Ca₂(Ti,Nb)₂O₆O
4.DH.15	'Oxyuranobetafite'	(U,Ca,◻)₂(Ti,Nb)₂O₆O
4.DH.15	Fluorcalciomicrolite	(Ca,Na)₂(Ta,Nb)₂O₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxycalciomicrolite	Ca₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxystannomicrolite	Sn₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Kenoplumbomicrolite	(Pb,◻)₂Ta₂O₆(◻,OH,O)	Iso.
4.DH.15	Oxynatromicrolite	(Na,Ca,U)₂(Ta,Nb)₂O₆(O,F)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxystibiomicrolite	(Sb³⁺,Ca)₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Hydromicrolite'	(H₂O,◻)₂Ta₂(O,OH)₆(H₂O)
4.DH.15	'Plumbomicrolite (of Hogarth 1977)'
4.DH.15	Hydrokenomicrolite	(◻,H₂O)₂Ta₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m)
4.DH.15	Hydroxykenoelsmoreite	(◻,Pb)₂(W,Fe³⁺,Al)₂(O,OH)₆(OH)	Trig. 3 : R3
4.DH.15 va	'Yttromicrolite (of Hogarth)'	(Ca,Y³⁺,U,Na)_2-x(Ta,Nb,Ti,Fe³⁺)₂O₇	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroxykenopyrochlore	(◻,Ce,Ba)₂(Nb,Ti)₂O₆(OH,F)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroxymanganopyrochlore	(Mn²⁺,Th,Na,Ca,REE)₂(Nb,Ti)₂O₆(OH)	Iso. m3(2/m3)
4.DH.20	'Cuproroméite'	Cu₂Sb₂(O,OH)₇	Iso.
4.DH.20	Hydroxycalcioroméite	(Ca,Sb³⁺)₂(Sb⁵⁺,Ti)₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Bindheimite	Pb₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Hydroxyferroroméite	(Fe²⁺_1.5◻_0.5)Sb⁵⁺₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Fluorcalcioroméite	(Ca,Na,◻)₂Sb⁵⁺₂(O,OH)₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Oxycalcioroméite	Ca₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Stetefeldtite	Ag₂Sb₂(O,OH)₇	Iso.
4.DH.20	Stibiconite	Sb³⁺Sb⁵⁺₂O₆(OH)	Iso. m3m(4/m32/m)
4.DH.20	Monimolite	Pb₂Sb⁵⁺₂O₇	Iso. m3m(4/m32/m)
4.DH.25	Rosiaite	PbSb⁵⁺₂O₆	Trig. 3m(32/m) : P31m
4.DH.30	Stefanweissite	(Ca,REE)₂Zr₂(Nb,Ti)(Ti,Nb)₂Fe²⁺O₁₄	Orth. mmm(2/m2/m2/m) : Cmca
4.DH.30	Zirconolite	CaZrTi₂O₇	Orth.
4.DH.30	Laachite	(Ca,Mn)₂Zr₂Nb₂TiFeO₁₄	Mon. 2/m : B2/b
4.DH.30	Nöggerathite-(Ce)	(Ce,Ca)₂Zr₂(Nb,Ti)(Ti,Nb)₂Fe²⁺O₁₄	Orth. mmm(2/m2/m2/m) : Cmca
4.DH.35	Liandratite	U(Nb,Ta)₂O₈	Trig. 3m(32/m) : P31m
4.DH.35	Petscheckite	UFe(Nb,Ta)₂O₈	Hex.
4.DH.40	Ingersonite	Ca₃Mn²⁺Sb⁵⁺₄O₁₄	Trig. 32 : P3₁21
4.DH.45	Pittongite	Na_0.22(W,Fe³⁺)(O,OH)₃ · 0.44H₂O	Hex. 6m2 : P6m2
4.DH.50	Tazzoliite	Ba_4-xNa_xTi₂Nb₃SiO₁₇[PO₂(OH)₂]_x(OH)_(1-2x)	Orth. mmm(2/m2/m2/m) : Fmmm

Other InformationHide

Notes:

Dissolves in H₃PO₄; does not dissolve in HCl and HNO₃

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 HydroxycalciopyrochloreHide

mindat.org URL:

https://www.mindat.org/min-40340.html
Please feel free to link to this page.

Search Engines:

Look for Hydroxycalciopyrochlore on Google

Look for Hydroxycalciopyrochlore images on Google

Look for Hydroxycalciopyrochlore on Bing

Look for Hydroxycalciopyrochlore images on Bing

Look for Hydroxycalciopyrochlore on DuckDuckGo

Look for Hydroxycalciopyrochlore images on DuckDuckGo

Look for Hydroxycalciopyrochlore in the Rock H. Currier Digital Library

External Links:

Look for Hydroxycalciopyrochlore on Webmineral

Look for Hydroxycalciopyrochlore on Wikipedia

Look for Hydroxycalciopyrochlore 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 D. Joyce minerals

References for HydroxycalciopyrochloreHide

Reference List:

Hogarth, D. (1961) A study of pyrochlore and betafite. The Canadian Mineralogist, 6 (5). 610-633

Bonazzi, P. (2006) Single-crystal diffraction and transmission electron microscopy studies of "silicified" pyrochlore from Narssarssuk, Julianehaab district, Greenland. American Mineralogist, 91 (5) 794-801 doi:10.2138/am.2006.1777

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. Mineralogical Magazine, 75 (5) 2549-2561 doi:10.1180/minmag.2011.075.5.2549

Christy, A. G., Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine, 77 (1) 13-20 doi:10.1180/minmag.2013.077.1.02

Yang, Guangming, Li, Guowu, Xiong, Ming, Pan, Baoming, Yan, Chenjie (2014) Hydroxycalciopyrochlore, A New Mineral Species from Sichuan, China. Acta Geologica Sinica - English Edition, 88 (3) 748-753 doi:10.1111/1755-6724.12235

(2016) Hydroxycalciopyrochlore. Handbook of Mineralogy. Mineralogical Society of America

Drábek, Milan; Frýda, Jiří; Šarbach, Michal; Skála, Roman (2017) Hydroxycalciopyrochlore from a regionally metamorphic marble at Bližná, Southwestern Czech Republic. Neues Jahrbuch für Mineralogie - Abhandlungen, 194 (1). 49-59 doi:10.1127/njma/2016/0014

Localities for HydroxycalciopyrochloreHide

Showing 27 localities.

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.

Hide all sections | Show all sections

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.


Angola
Huíla Province Quilengues ⓘ Mount Bonga	Amores-Casals et al. (2019)

Argentina
La Rioja Province Sanagasta department ⓘ La Chinchilla granite	Lira et al. (2023)

Canada
Newfoundland and Labrador Labrador Seal Lake alkaline complex (Letitia Lake) ⓘ Mann 2 (Ten Mile Lake)	Pavel M. Kartashov analytical data (2013)
Ontario Haliburton County Minden Hills Township Lutterworth Township ⓘ Hogan Occurrence	Hogarth (1961)
Hastings County Hastings Highlands Municipality Monteagle Township ⓘ MacDonald Mine	Ontario Geological Survey Mineral ... +2 other references
Québec Outaouais ⓘ Gatineau TE	Hogarth (1961)

China (TL)
Sichuan Liangshan Yi Mianning County ⓘ Maoniuping Mine (TL)	Williams et al. (2011) +1 other reference
Xinjiang Akesu Prefecture Baicheng Co. ⓘ Boziguoer intrusion ?	Jingwu Yin et al. (2013)

Czech Republic
Moravian-Silesian Region Nový Jičín District Nový Jičín Bludovice ⓘ Čertův mlýn ?	Matýsek et al. (2025)
South Bohemian Region Český Krumlov District Černá v Pošumaví Bližná ⓘ Václav graphite mine	Drábek +1 other reference

Finland
Southwest Finland Laitila ⓘ Amazonite pegmatite	Pavel M. Kartashov analytical data 2019

Germany
Hesse Darmstadt Darmstadt-Dieburg Fischbachtal Lichtenberg ⓘ Altscheuer quarries	Belendorff (2021)
Rhineland-Palatinate Mayen-Koblenz Mendig Mendig ⓘ In den Dellen quarries	Zubkova. N.V. et al. (2015)

Greenland
Kujalleq Igaliku Narsaarsuk Plateau ⓘ Narssârssuk pegmatite	Bonazzi (2006) +1 other reference

Italy
Lombardy Sondrio Province Chiesa in Valmalenco ⓘ Sissone Valley ?	Marchesini et al. (2025)

Norway
Telemark Bamble Bjordammen ⓘ Bjordammen II pegmatite ?	Larsen (2025)

Romania
Hunedoara County ⓘ Gradistea de Munte deposit	HÎRTOPANU et al. (2014)

Russia
Chelyabinsk Oblast Ilmen Mountains ⓘ Ilmenogorsky alkaline complex	Makagonov et al. (2017)
ⓘ Vishnevye Mountains	Chukanov (2014)
ⓘ Karavai Mt	Pavel M. Kartashov analytical data of ...
Murmansk Oblast Kovdorsky District ⓘ Kovdor Massif	Ivanyuk et al. (2018)
Northern Karelia Vuoriyarvi alkaline-ultrabasic massif ⓘ Petyayan-vara carbonatite	Kozlov +6 other references
Voron'i Tundry ⓘ Okhmyl'k Mt	Zozulya et al. (2024)

Slovakia
Košice Region Rožňava District Dobšiná Dobšiná mining district ⓘ Malá Vlčia Valley pegmatite vein	Uher P. et al. (2018)

Tajikistan
Districts of Republican Subordination ⓘ Dara-i-Pioz Massif	Ефимов А.Ф. et al. (1980)

USA
New Jersey Sussex County Franklin Franklin Mine ⓘ Buckwheat dump mineral collecting site	Chris O'neill
Vernon Township McAfee ⓘ McAfee Quarry ?	van Rossen (2026)

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 11:31:26 Page updated: August 19, 2026 22:03:42

Go to top of page

Hydroxycalciopyrochlore

About HydroxycalciopyrochloreHide

Unique IdentifiersHide

IMA Classification of HydroxycalciopyrochloreHide

Classification of HydroxycalciopyrochloreHide

Mineral SymbolsHide

Physical Properties of HydroxycalciopyrochloreHide

Chemistry of HydroxycalciopyrochloreHide

Chemical AnalysisHide

Crystallography of HydroxycalciopyrochloreHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of HydroxycalciopyrochloreHide

Synonyms of HydroxycalciopyrochloreHide

Other Language Names for HydroxycalciopyrochloreHide

Relationship of Hydroxycalciopyrochlore to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for HydroxycalciopyrochloreHide

References for HydroxycalciopyrochloreHide

Localities for HydroxycalciopyrochloreHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide