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Heidornite

A valid IMA mineral species - grandfathered

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Photos of Heidornite (8)

Heidornite Gallery Search Photos of Heidornite

Edit Add Synonym Edit CIF structures Clear Cache

Heidornite, etc.

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Heidornite

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Heidornite

Kohnstein Quarry, Niedersachswerfen, Harztor, Nordhausen District, Thuringia, Germany

Heidornite, etc.

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Heidornite

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Heidornite

Kohnstein Quarry, Niedersachswerfen, Harztor, Nordhausen District, Thuringia, Germany

Heidornite, etc.

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Heidornite

Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

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About HeidorniteHide

Formula:

Na₂Ca₃B₅O₈(SO₄)₂Cl(OH)₂

Colour:

Colorless

Lustre:

Vitreous

Hardness:

4 - 5

Specific Gravity:

2.753

Crystal System:

Monoclinic

Name:

Named in honour of Dr. Fritz Hans Otto Heidorn (1899 - ?), senior petroleum geologist for C. Deilmann Bergbau GmbH in Bentheim, Germany, for his scientific study of the Zechstein deposits.

Type Locality:

ⓘ Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

This page provides mineralogical data about Heidornite.

Unique IdentifiersHide

Mindat ID:

1846

Long-form identifier:

mindat:1:1:1846:9

GUID
(UUID V4):

ffcc8af7-3b47-43e4-b1ca-b4f5ee28d650

IMA Classification of HeidorniteHide

IMA status:

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

IMA Formula:

Na₂Ca₃B₅O₈(SO₄)₂(OH)₂Cl

First published:

1956

Type description reference:

von Engelhardt, W., Füchtbauer, H., and Zemann, J. (1956) Heidornit Na2Ca3[Cl · (SO4)2 · B5O8(OH)2] ein neues Bormineral aus dem Zechsteinanhydrit - Mit einer röntgenographischen Untersuchung. Contributions to Mineralogy and Petrology: 5(3): 177-186.

Classification of HeidorniteHide

Strunz-mindat (2023):

6.EC.30

6 : BORATES
E : Pentaborates
C : Phyllo-pentaborates

Dana 8th ed.:

32.3.5.1

32 : COMPOUND SULFATES
3 : Anhydrous Compound Sulfates containing Hydroxyl or Halogen

Hey's CIM Ref.:

10.3.2

10 : Borates with other anions
3 : Borates with sulphate

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
Hdn	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 HeidorniteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colorless

Streak:

White

Hardness:

4 - 5 on Mohs scale

Cleavage:

Perfect
{001}

Density:

2.753(2) g/cm³ (Measured) 2.70 g/cm³ (Calculated)

Optical Data of HeidorniteHide

Type:

Biaxial (+)

RI values:

n_α = 1.579(5) n_β = 1.588(5) n_γ = 1.604(5)

2V:

Measured: 73° to 77°, Calculated: 74°

Max Birefringence:

δ = 0.025

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

Surface Relief:

Moderate

Dispersion:

very weak

Chemistry of HeidorniteHide

Mindat Formula:

Na₂Ca₃B₅O₈(SO₄)₂Cl(OH)₂

Elements listed:

B, Ca, Cl, H, Na, O, S - search for minerals with similar chemistry

Crystallography of HeidorniteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

B2/b

Setting:

C2/c

Cell Parameters:

a = 10.19 Å, b = 7.76 Å, c = 18.81 Å
β = 93.33°

Ratio:

a:b:c = 1.313 : 1 : 2.424

Unit Cell V:

1,484.88 Å³ (Calculated from Unit Cell)

Morphology:

Steeply dipyramidal showing {110}, {111}, {112}

Crystal StructureHide

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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

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CIF File Best | x | y | z | a | b | c

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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)
0014732	Heidornite	Burzlaff H (1967) Die struktur des heidornit Ca3Na2Cl(SO4)2B5O8(OH)2 Neues Jahrbuch fur Mineralogie, Monatshefte 1967 157-169		1967		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Heidornite'
loop_
_publ_author_name
'Burzlaff H'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 1967 
_journal_year 1967
_journal_page_first 157
_journal_page_last 169
_publ_section_title
;
 Die struktur des heidornit Ca3Na2Cl(SO4)2B5O8(OH)2
;
_database_code_amcsd 0014732
_chemical_formula_sum 'Ca3 Na2 Cl S2 O18 B5 H2'
_cell_length_a 10.21
_cell_length_b 7.84
_cell_length_c 18.79
_cell_angle_alpha 90
_cell_angle_beta 93.5
_cell_angle_gamma 90
_cell_volume 1501.267
_exptl_crystal_density_diffrn      2.698
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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
Ca1   0.00000   0.39330   0.25000   0.00393
Ca2   0.41000   0.24250   0.40308   0.00595
Na   0.15640   0.27810   0.07700   0.01963
Cl   0.00000   0.00000   0.00000   0.01292
S   0.13710   0.47790   0.42205   0.00595
O11   0.01290   0.45370   0.37570   0.01672
O12   0.14070   0.35310   0.47950   0.02014
O13   0.25030   0.45550   0.37800   0.01963
O14   0.13500   0.65340   0.45020   0.01646
B1   0.33480   0.48660   0.18290   0.00760
B2   0.26200   0.23140   0.25040   0.00633
B3   0.50000   0.30540   0.25000   0.01127
O21   0.15520   0.14190   0.27170   0.01077
O22   0.22780   0.37160   0.20980   0.00849
O23   0.46160   0.40040   0.18450   0.00912
O24   0.38990   0.18930   0.27060   0.00975
O25   0.27990   0.53550   0.11160   0.00975
H   0.19340   0.01670   0.44650   0.00912

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.11 Å	(vs)
3.77 Å	(s)
2.74 Å	(s)
2.96 Å	(ms)
2.90 Å	(m)
2.81 Å	(m)
2.54 Å	(m)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
25 : Evaporites (prebiotic)

Type Occurrence of HeidorniteHide

Type Locality:

ⓘ Frenswegen 3 deep bore, Frenswegen, Nordhorn, County of Bentheim District, Lower Saxony, Germany

Place of Conservation of Type Material:

Natural History Museum, London, England, 1957,370.
Harvard University, Cambridge, Massachusetts, USA, 109587.

Geological Setting of Type Material:

Marine evaporite deposit

Associated Minerals at Type Locality:

Glauberite

Anhydrite

Reference:

Download:

http://rruff.info/rruff_1.0/uploads/HBMP5_177.pdf

Other Language Names for HeidorniteHide

German:Heidornit

Russian:Хейдорнит

Spanish:Heidornita

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Heidornite associated with Anhydrite	CaSO₄
1 photo of Heidornite associated with Glauberite	Na₂Ca(SO₄)₂

Related Minerals - Strunz-mindat Grouping Hide

6.EC.	Popugaevaite	Ca₃[B₅O₆(OH)₆]FCl₂ · 8H₂O	Mon. m : Pm
6.EC.	Calcioveatchite	SrCaB₁₁O₁₆(OH)₅ · 5H₂O	Mon. 2 : P2₁
6.EC.05	Biringuccite	Na₂B₅O₈(OH) · H₂O	Mon. 2/m : P2₁/b
6.EC.05	Nasinite	Na₂[B₅O₈(OH)] · 2H₂O	Orth. mmm (2/m 2/m 2/m)
6.EC.10	Gowerite	Ca[B₅O₈(OH)][B(OH)₃] · 3H₂O	Mon. 2/m : P2₁/b
6.EC.15	Veatchite	Sr₂B₁₁O₁₆(OH)₅ · H₂O	Mon. m : Bb
6.EC.20	Volkovskite	KCa₄[B₅O₈OH]₄[B(OH)₃]₂Cl · 4H₂O	Tric. 1 : P1
6.EC.25	Tuzlaite	NaCaB₅O₈(OH)₂ · 3H₂O	Mon. 2/m : P2₁/b
6.EC.35	Brianroulstonite	Ca₃[B₅O₆(OH)₆](OH)Cl₂ · 8H₂O	Mon. m

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 HeidorniteHide

mindat.org URL:

https://www.mindat.org/min-1846.html
Please feel free to link to this page.

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Look for Heidornite in the Rock H. Currier Digital Library

External Links:

Look for Heidornite on Webmineral

Look for Heidornite on Wikipedia

Look for Heidornite 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 HeidorniteHide

Reference List:

American Mineralogist (1957): 42: 120.

Burzlaff, H. (1967): Die Struktur des Heidornit, Ca3Na2Cl(SO4)2B5O8(OH)2. Neues Jahrbuch für Mineralogie, Monatshefte: 1967: 157-169 (in German).

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

Localities for HeidorniteHide

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.


Germany (TL)
Lower Saxony County of Bentheim District Nordhorn Frenswegen ⓘ Frenswegen 3 deep bore (TL)	von Engelhardt, W., Füchtbauer, H., and Zemann, J. (1956): Contributions to Mineralogy and Petrology 5(3), 177-186.
Thuringia Nordhausen District Harztor Niedersachswerfen ⓘ Kohnstein Quarry	Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366

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Heidornite

About HeidorniteHide

Unique IdentifiersHide

IMA Classification of HeidorniteHide

Classification of HeidorniteHide

Mineral SymbolsHide

Physical Properties of HeidorniteHide

Optical Data of HeidorniteHide

Chemistry of HeidorniteHide

Crystallography of HeidorniteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of HeidorniteHide

Other Language Names for HeidorniteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for HeidorniteHide

References for HeidorniteHide

Localities for HeidorniteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide