Shimazakiite-4M
A structural variant of Shimazakiite
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Formula:
Ca2B2-xO5-3x(OH)3x (x = 0~0.06)
Specific Gravity:
2.78 (Calculated)
Crystal System:
Monoclinic
Unique Identifiers
Mindat ID:
43742
Long-form identifier:
mindat:1:1:43742:2
GUID
(UUID V4):
(UUID V4):
0a2b8a06-d1d6-4caf-9cd0-f47be2d76d3a
Physical Properties of Shimazakiite-4M
Hardness:
VHN50=549 kg/mm2 - Vickers
Density:
2.78 g/cm3 (Calculated)
Optical Data of Shimazakiite-4M
Type:
Biaxial (-)
RI values:
nα = 1.586(2) nβ = 1.650(2) nγ = 1.667(2)
2V:
Calculated: 53°
Max Birefringence:
δ = 0.081
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Shimazakiite-4M
Formula:
Ca2B2-xO5-3x(OH)3x (x = 0~0.06)
Elements listed:
Crystallography of Shimazakiite-4M
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 3.5485(12) Å, b = 6.352(2) Å, c = 19.254(6) Å
β = 92.393(13)°
β = 92.393(13)°
Ratio:
a:b:c = 0.559 : 1 : 3.031
Unit Cell V:
433.61 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.92 Ã… | (100) |
| 3.02 Ã… | (84) |
| 2.81 Ã… | (56) |
| 2.76 Ã… | (32) |
| 1.880 Ã… | (32) |
| 3.84 Ã… | (30) |
| 6.03 Ã… | (27) |
Other Information
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 Shimazakiite-4M
mindat.org URL:
https://www.mindat.org/min-43742.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
