UM1958-03-SiO:AlCaFeKNa
A material that is NOT an approved mineral species
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Formula:
(K,Na)4Ca2(Al,Fe)(Si,Al)6(O,OH,F)18 · 0.6NaCl
Colour:
Gray
Lustre:
Vitreous, Pearly
Hardness:
4
Crystal System:
Orthorhombic
Reported as "mineral no. 3". Chemically somewhat similar to umbrianite and quadridavyne. See also 'UM1958-04-SiO:AlHK'.
Finely foliated; replaced by pectolite.
Finely foliated; replaced by pectolite.
Unique Identifiers
Mindat ID:
47089
Long-form identifier:
mindat:1:1:47089:8
GUID
(UUID V4):
(UUID V4):
7cada210-06cf-4242-9058-a94463fe68e5
Physical Properties of UM1958-03-SiO:AlCaFeKNa
Vitreous, Pearly
Colour:
Gray
Comment:
Greenish-gray if aegirine inclusions are present
Hardness:
4 on Mohs scale
Comment:
ca. 4
Tenacity:
Brittle
Cleavage:
Perfect
Optical Data of UM1958-03-SiO:AlCaFeKNa
Type:
Biaxial (+)
RI values:
nα = 1.529 nβ = 1.531 nγ = 1.532
2V:
Measured: 29°
Max Birefringence:
δ = 0.004
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:
Low
Chemistry of UM1958-03-SiO:AlCaFeKNa
Mindat Formula:
(K,Na)4Ca2(Al,Fe)(Si,Al)6(O,OH,F)18 · 0.6NaCl
Crystallography of UM1958-03-SiO:AlCaFeKNa
Crystal System:
Orthorhombic
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.077 Å | (100) |
2.904 Å | (90) |
3.474 Å | (80) |
2.477 Å | (70) |
1.928 Å | (70) |
1.864 Å | (70) |
1.769 Å | (70) |
1.532 Å | (60) |
Comments:
Some lines match the PXRD pattern of pectolite
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 UM1958-03-SiO:AlCaFeKNa
mindat.org URL:
https://www.mindat.org/min-47089.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for UM1958-03-SiO:AlCaFeKNa
Reference List:
Localities for UM1958-03-SiO:AlCaFeKNa
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).
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.
All localities listed without proper references should be considered as questionable.
Russia | |
| Dorfman (1958) +1 other reference |