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Johachidolite

A valid IMA mineral species - grandfathered

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Photos of Johachidolite (23)

Johachidolite Gallery Search Photos of Johachidolite

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Johachidolite, etc.

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite, etc.

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite, etc.

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Johachidolite

Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

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About JohachidoliteHide

Formula:

CaAlB₃O₇

Colour:

Colorless, white, pale yellow, light green

Hardness:

7½

Specific Gravity:

3.4

Crystal System:

Orthorhombic

Name:

Named for its type locality, Johachido District, North Korea, an obsolete Japanese colonial-era name for the locality.

Type Locality:

ⓘ Sangpal-tong (Johachido), Changbaeng-myon, Kilju County, North Hamgyong Province, North Korea

Visit gemdat.org for gemological information about Johachidolite.

Unique IdentifiersHide

Mindat ID:

2101

Long-form identifier:

mindat:1:1:2101:8

GUID
(UUID V4):

5535e0b5-22ff-49fb-8156-de9076992028

IMA Classification of JohachidoliteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

First published:

1942

Type description reference:

Iwase, E., Saito, N. (1942) Johachidolite - a new mineral of hydrous fluoborate of sodium, calcium and aluminium. Scientific Papers of the Institute of Physical and Chemical Research, Tokyo: 39: 300-304.

Classification of JohachidoliteHide

Strunz-mindat (2024):

6.CC.05

6 : BORATES
C : Triborates
C : Phyllo-triborates

Dana 8th ed.:

24.5.3.1

24 : ANHYDROUS BORATES
5 : Miscellaneous

Hey's CIM Ref.:

10.1.16

10 : Borates with other anions
1 : Borates with halide

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
Jhd	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 JohachidoliteHide

Transparency:

Transparent

Colour:

Colorless, white, pale yellow, light green

Streak:

White

Hardness:

7½ on Mohs scale

Fracture:

Sub-Conchoidal

Density:

3.4 g/cm³ (Measured)

Optical Data of JohachidoliteHide

Type:

Biaxial (+)

RI values:

n_α = 1.712(2) n_β = 1.717(1) n_γ = 1.726(1)

Max Birefringence:

δ = 0.014

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

Surface Relief:

High

Dispersion:

relatively strong r> v

Pleochroism:

Non-pleochroic

Chemistry of JohachidoliteHide

Mindat Formula:

CaAlB₃O₇

Elements listed:

Al, B, Ca, O - search for minerals with similar chemistry

Crystallography of JohachidoliteHide

Crystal System:

Orthorhombic

Class (H-M):

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

Space Group:

Cmma

Cell Parameters:

a = 9.767(2) Å, b = 11.723(3) Å, c = 4.3718(5) Å

Ratio:

a:b:c = 0.833 : 1 : 0.373

Unit Cell V:

408.3 Å³

Morphology:

Occurs as grains and lamellar masses.

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)
0007267	Johachidolite	Kadiyski M, Armbruster T, Gunther D, Reusser E, Peretti A (2008) Johachidolite, CaAl[B3O7], a mineralogical and structural peculiarity European Journal of Mineralogy 20 965-973		2008	Mogok district, Myanmar	0	293
0014687	Johachidolite	Moore P B, Araki T (1972) Johachidolite, CaAl[B3O7], a borate with very dense atomic structure Nature Physical Science 240 63-65		1972	Johachido, North Korea	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Johachidolite'
loop_
_publ_author_name
'Kadiyski M'
'Armbruster T'
'Gunther D'
'Reusser E'
'Peretti A'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 20 
_journal_year 2008
_journal_page_first 965
_journal_page_last 973
_publ_section_title
;
 Johachidolite, CaAl[B3O7], a mineralogical and structural peculiarity
;
_database_code_amcsd 0007267
_chemical_compound_source 'Mogok district, Myanmar'
_chemical_formula_sum 'Ca Al B3 O7'
_cell_length_a 7.967
_cell_length_b 11.723
_cell_length_c 4.3718
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 408.314
_exptl_crystal_density_diffrn      3.440
_symmetry_space_group_name_H-M 'C m m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  '1/2+x,-y,z'
  '+x,1/2-y,z'
  '1/2-x,y,-z'
  '-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'
  '1/2+x,y,-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,z'
  '-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_U_iso_or_equiv
Ca   0.25000   0.25000   0.00000   0.00801
Al   0.00000   0.00000   0.00000   0.00419
B1   0.25000   0.00000   0.50000   0.00436
B2   0.00000   0.13658   0.45836   0.00479
O1   0.00000   0.25000   0.32945   0.00599
O2   0.00000   0.13131  -0.22291   0.00538
O3   0.14664   0.07316   0.29975   0.00471
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
Ca 0.00840 0.00811 0.00752 0.00000 0.00273 0.00000
Al 0.00491 0.00432 0.00333 0.00000 0.00000 0.00016
B1 0.00410 0.00470 0.00420 0.00000 0.00000 0.00000
B2 0.00540 0.00460 0.00430 0.00000 0.00000 0.00001
O1 0.01020 0.00320 0.00450 0.00000 0.00000 0.00000
O2 0.00730 0.00530 0.00346 0.00000 0.00000 0.00031
O3 0.00406 0.00546 0.00460 0.00092 -0.00018 0.00028

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.632 Å	(100)
1.964 Å	(49)
1.820 Å	(27)
2.434 Å	(25)
2.001 Å	(25)
1.754 Å	(21)
3.506 Å	(18)

Comments:

Johachido district, North Korea. The data are from Aristarain and Erd (1977).

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 JohachidoliteHide

Type Locality:

ⓘ Sangpal-tong (Johachido), Changbaeng-myon, Kilju County, North Hamgyong Province, North Korea

General Appearance of Type Material:

Grains and lamellar masses.

Geological Setting of Type Material:

Nepheline dikes traversing limestone.

Reference:

Download:

https://rruff.info/rruff_1.0/uploads/SPIPCR39_300.pdf

Other Language Names for JohachidoliteHide

German:Johachidolit

Simplified Chinese:硼铝钙石

Spanish:Johachidolita

Common AssociatesHide

Associated Minerals Based on Photo Data:

8 photos of Johachidolite associated with Quartz	SiO₂
4 photos of Johachidolite associated with Hackmanite	Na₈Al₆Si₆O₂₄(Cl₂,S)
4 photos of Johachidolite associated with Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
4 photos of Johachidolite associated with Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
2 photos of Johachidolite associated with Apatite	Ca₅(PO₄)₃(Cl/F/OH)
1 photo of Johachidolite associated with Sodalite	Na₄(Si₃Al₃)O₁₂Cl
1 photo of Johachidolite associated with Mica Group
1 photo of Johachidolite associated with Scapolite
1 photo of Johachidolite associated with Apatite Group
1 photo of Johachidolite associated with Feldspar Group

Fluorescence of JohachidoliteHide

In UV light:

Intense blue fluorescence (UV) due to traces of REEs.

Other InformationHide

Thermal Behaviour:

Begins to fuse at about yellow heat, without giving off water. Readily fuses at read heat to a clear hard glass. The fused glass is very slowly soluble in cold l:l HCl.

Notes:

Insoluble or very slightly soluble in strong acids (HF, HCl, aqua regia) or in hot strong alkaline solutions.

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 JohachidoliteHide

mindat.org URL:

https://www.mindat.org/min-2101.html
Please feel free to link to this page.

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External Links:

Look for Johachidolite on Webmineral

Look for Johachidolite on Wikipedia

Look for Johachidolite 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

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References for JohachidoliteHide

Reference List:

Fleischer, M. (1948) New mineral names. American Mineralogist: 33: 98-100.

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.

Davies, W.O., Machin, M.P. (1968) Johachidolite, a revised chemical formula. The AMerican Mineralogist: 53(11-12): 2082-2084.

Moore, P.B., Araki, T. (1972) Johachidolite, CaAl[B3O7], a borate with very dense atomic structure. Nature Physical Science: 240: 63-65.

Aristarain, L.F., Erd, R.C. (1977) Johachidolite redefined: a calcium aluminum borate. American Mineralogist: 62: 327-329.

Grew, Edward S., Anovitz, Lawrence M., Grew, Edward S., Anovitz, Lawrence M. - Eds. (1996) Boron - Mineralogy, Petrology and Geochemistry. Reviews in Mineralogy Vol. 33. Mineralogical Society of America

Harding, R.R., Francis, J.G., Oldershaw, C.J.E., Rankin, A.H. (1999) Johachidolite - a new gem. The Journal of Gemmology: 26(5): 324-329.

Peretti, A., Peretti, F., Tun, N.L., Günther, D., Hametner. K., Bieri, W., Reusser, E., Kadiyski, M., Armbruster, T. (2007) Gem quality johachidolite: occurrence, chemical composition and crystal structure. Contributions to Gemology: 2007(5): 1-53.

Kawano, J., Abduriyim, A. (2007) Natural johachidolite. Gemmology: 38(459): 12-14.

Chadwick, K.M., Breeding, C.M. (2008) Color variations and properties of johachidolite from Myanmar. Gems and Gemology: 246-251.

Kadiyski, M., Armbruster, T., Günther, D., Reusser, E., Peretti, A. (2008) Johachidolite, CaAl[B3O7], a mineralogical and structural peculiarity. European Journal of Mineralogy: 20: 965-973.

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

Localities for JohachidoliteHide

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.


Myanmar
Mandalay Region Pyin-Oo-Lwin District ⓘ Mogok Township	www.ruby-sapphire.com (2000) +1 other reference
ⓘ Pein-Pyit (Painpyit; Pyan Pyit)	Knut Eldjarn specimen +1 other reference
ⓘ Pyant Gyi mine (Pyan Gyi)	Dr. Marcus Origlieri specimens +1 other reference

North Korea (TL)
North Hamgyong Province Kilju County Changbaeng-myon ⓘ Sangpal-tong (Johachido) (TL)	Iwase et al. (1942)