Vanuxemite

Where it forms, where it's found

1recorded occurrences

Source · OpenStreetMap

Physical

Hardness: 1Talc
2Gypsum
3Calcite
4Fluorite
5Apatite
6Orthoclase
7Quartz
8Topaz
9Corundum
10Diamond
Transparency: Opaque
Colour: Creamy white to pale yellow
Streak: White
Tenacity: waxy
Fracture: Irregular/Uneven
Density: 2.5 g/cm³

Optical

UV response: Pale to medium creamy yellow with slightly pose pink mottling due to hemimorphite and probably calcite intergrowth.

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
8OOxygen Oxygen 16 15.999 255.984
37.13%
30ZnZinc Zinc 3 65.380 196.140
28.45%
14SiSilicon Silicon 4 28.085 112.340
16.30%
13AlAluminium Aluminium 4 26.982 107.928
15.66%
1HHydrogen Hydrogen 10 1.008 10.080
1.46%
11NaSodium Sodium 0.3 22.990 6.897
1.00%
Total 689.369 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
8OOxygen	Oxygen	16	15.999	255.984	37.13%
30ZnZinc	Zinc	3	65.380	196.140	28.45%
14SiSilicon	Silicon	4	28.085	112.340	16.30%
13AlAluminium	Aluminium	4	26.982	107.928	15.66%
1HHydrogen	Hydrogen	10	1.008	10.080	1.46%
11NaSodium	Sodium	0.3	22.990	6.897	1.00%
	Total	689.369	100.00%

Synonyms

Vanuxemit
Vanuxemita

Literature, links & citation

Citations

1876Shepard, C.U. (1876): New Minerals. American Journal of Science, third series, 12, 231.
1951Faust, George T. (1951) Thermal analysis and x-ray studies of sauconite and some zinc minerals of the same paragenetic association. American Mineralogist, 36 (11-12) 795-822

Cite this entry

Entry last updated August 11, 2025

@misc{mineral2025,
  author    = {Mineral Index editorial board},
  title     = {Vanuxemite — Mineral Index},
  year      = {2025},
  url       = {https://mineralindex.org/minerals/vanuxemite-4154}
}