Jacquesdietrichite
A valid IMA mineral species
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About Jacquesdietrichite
Formula:
Cu2(H2BO3)(OH)3
Colour:
Bright blue
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
3.28
Crystal System:
Orthorhombic
Name:
Named for Jacques Emile Dietrich, Ph.D., of Nice, France (1926 - 2009), who discovered the mineral. He was a French geologist/mineralogist who spent many years working in Morocco.
This page provides mineralogical data about Jacquesdietrichite.
Unique Identifiers
Mindat ID:
26449
Long-form identifier:
mindat:1:1:26449:1
IMA Classification of Jacquesdietrichite
Approved
IMA Formula:
Cu2+2BO(OH)5
Approval year:
2003
First published:
2004
Classification of Jacquesdietrichite
6.AB.80
6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Mineral Symbols
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 |
|---|---|---|
| Jdt | 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 Jacquesdietrichite
Vitreous
Transparency:
Transparent
Colour:
Bright blue
Streak:
Pale blue
Hardness:
2 on Mohs scale
Hardness Data:
Measured
Comment:
Hardness could not be accurately measured
Tenacity:
Flexible
Cleavage:
Perfect
Perfect and very easy {100}, and good {010} and {001}
Perfect and very easy {100}, and good {010} and {001}
Density:
3.28(5) g/cm3 (Measured) 3.303 g/cm3 (Calculated)
Optical Data of Jacquesdietrichite
Type:
Biaxial (-)
RI values:
nα = 1.627(2) nβ = 1.699(2) nγ = 1.769(2)
2V:
Calculated: 86°
Max. Birefringence:
δ = 0.142
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
X (deep blue) > Y (medium blue) > Z (pale blue)
X = a
Y = c
Z = b
X = a
Y = c
Z = b
Chemistry of Jacquesdietrichite
Mindat Formula:
Cu2(H2BO3)(OH)3
Element Weights:
Elements listed:
Crystallography of Jacquesdietrichite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pmna
Cell Parameters:
a = 9.455 Å, b = 5.866 Å, c = 8.668 Å
Ratio:
a:b:c = 1.612 : 1 : 1.478
Unit Cell V:
480.75 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Type material: Blades, tablets, scales. {001} is dominant with bounding forms {100} and {010}. Often tapering somewhat in thickness from tip to base.
Twinning:
None observed.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0007064 | Jacquesdietrichite | Kampf A R, Favreau G (2004) Jacquesdietrichite, Cu2[BO(OH)2](OH)3, a new mineral from the Tachgagalt mine, Morocco: Description and crystal structure European Journal of Mineralogy 16 361-366 | 2004 | Tachgagalt mine, Morocco | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.734 Å | (100) |
| 3.941 Å | (90) |
| 3.192 Å | (40) |
| 2.545 Å | (45) |
| 2.489 Å | (50) |
| 1.922 Å | (50) |
| 1.838 Å | (40) |
| 1.712 Å | (40) |
Locality:
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Jacquesdietrichite
General Appearance of Type Material:
Transparent bright-blue blades, sometimes intergrown into broader blades, and as aggregates of pale-blue scales.
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, California, USA; 52461.
Geological Setting of Type Material:
Probably formed as a secondary low-temperature product of hydrothermal reworking of boron-bearing manganese-oxide ore (gaudefroyite).
Associated Minerals at Type Locality:
Synonyms of Jacquesdietrichite
Other Language Names for Jacquesdietrichite
Dutch:Jacquesdietrichiet
German:Jacquesdietrichit
Russian:Жакдитрихит
Simplified Chinese:羟硼铜石
Traditional Chinese:羥硼銅石
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 6.AB. | Chubarovite | KZn2(BO3)Cl2 |
| 6.AB. | Rhabdoborite-(Mo) | Mg12Mo6+1.33O6(BO3)6F2 |
| 6.AB.05 | Hambergite | Be2(BO3)(OH) |
| 6.AB.10 | Berborite | Be2(BO3)(OH) · H2O |
| 6.AB.15 | Jeremejevite | Al6(BO3)5(F,OH)3 |
| 6.AB.20 | Yuanfuliite | Mg(Fe3+,Al)O(BO3) |
| 6.AB.20 | Warwickite | (Mg,Ti,Fe,Al)2O(BO3) |
| 6.AB.25 | Karlite | (Mg,Al)6.5(BO3)3(OH)4(◻,Cl)0.5 |
| 6.AB.30 | Marinaite | Cu2Fe3+O2(BO3) |
| 6.AB.30 | Savelievaite | Mg2Cr3+O2(BO3) |
| 6.AB.30 | Fredrikssonite | Mg2Mn3+O2(BO3) |
| 6.AB.30 | Vonsenite | Fe2+2Fe3+(BO3)O2 |
| 6.AB.30 | Ludwigite | Mg2Fe3+(BO3)O2 |
| 6.AB.30 | Azoproite | (Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2 |
| 6.AB.30 | Bonaccordite | Ni2Fe3+(BO3)O2 |
| 6.AB.35 | Folvikite | Sb5+Mn3+(Mg,Mn2+)10O8(BO3)4 |
| 6.AB.35 | Pinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 |
| 6.AB.40 | Takéuchiite | (Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2 |
| 6.AB.40 | Blatterite | Sb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32 |
| 6.AB.40 | Orthopinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 |
| 6.AB.40 | Chestermanite | Mg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2 |
| 6.AB.45 | Aluminomagnesiohulsite | (Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2 |
| 6.AB.45 | Hulsite | Fe2+2Fe3+O2(BO3) |
| 6.AB.45 | Magnesiohulsite | Mg2Fe3+O2(BO3) |
| 6.AB.50 | Fluoborite | Mg3(BO3)(F,OH)3 |
| 6.AB.50 | Hydroxylborite | Mg3(BO3)(OH)3 |
| 6.AB.55 | Shabynite | Mg5(BO3)(OH)5(Cl,OH)2 · 4H2O |
| 6.AB.55 | Wightmanite | Mg5(BO3)O(OH)5 · 2H2O |
| 6.AB.60 | Gaudefroyite | Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3 |
| 6.AB.65 | Sakhaite | Ca48Mg16(BO3)32(CO3)16 · 2(H2O,HCl) |
| 6.AB.70 | Harkerite | Ca48Mg16[AlSi4O15(OH)]4(BO3)16(CO3)16 · 2(H2O,HCl) |
| 6.AB.75 | Pertsevite-(F) | Mg2(BO3)(F,OH) |
| 6.AB.75 | Pertsevite-(OH) | Mg2(BO3)(OH) |
| 6.AB.85 | Rhabdoborite-(V) | Mg12(V5+,Mo6+,W6+)1.5O6{[BO3]6-x[(P,As)O4]xF2-x} (x < 1) |
| 6.AB.85 | Rhabdoborite-(W) | Mg12(W6+,V5+)1.5O6{[BO3]6-x[(P,As)O4]xF2-x} |
| 6.AB.85 | Painite | CaZrAl9(BO3)O15 |
| 6.AB.90 | Mengxianminite | (Ca,Na)2Sn2(Mg,Fe)3Al8[(BO3)(BeO4)O6]2 |
Fluorescence of Jacquesdietrichite
Not fluorescent
Other Information
Notes:
Dissolves quickly in dilute HCl.
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 Jacquesdietrichite
mindat.org URL:
https://www.mindat.org/min-26449.html
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References for Jacquesdietrichite
Localities for Jacquesdietrichite
Showing 3 localities.
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The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Japan | |
| Satoshi Matsubara et al. (2010) |
Morocco (TL) | |
| Kampf et al. (2004) |
USA | |
| Travis Olds collection |
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Tachgagalt Mine, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco