Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Ca^{2+}$	Calcium cation	element	3		constituent cation	main
	$V$	Vanadium	element	10		constituent element	main
	$O$	Oxygen	element	28		constituent element	main
	$H_2O$	Water	molecule	17		hydration	main

Chemical functions

	Function	Number
	$R-OH$	2

Chemical bonds

	Bond	Number
	$V-O$	50
	$-O-H$	2

Oxides

Formula	$CaO$	$V_{2}O_{5}$	$H_{2}O$
Mass fraction (%)	12.16	65.71	22.13

Strunz

Class

oxides - hydroxides - arsenites (04)

Division

V[5+,6+] vanadates (04.H)

Family

[6]-Sorovanadates (04.HC)

Code

04.HC.05

Dana

Major class

phosphates, arsenates, vanadates (VII)

Class

vanadium oxysalts (47)

Type

Anhydrous Containing Hydroxyl or Halogen (47.02)

Group

Pascoite group (47.02.01)

Code

47.02.01.01

Phase type

crystalline

Crystal system

monoclinic

Crystal class

prismatic

Crystal class symbol

2/m (C2h)

Crystal spacegroup

C2/m

Refringence type

biaxial

Refringence sign

negative

Birefringence

0.050

Refraction index $n_{\alpha}$

1.775

Refraction index $n_{\beta}$

1.815

Refraction index $n_{\gamma}$

1.825

Dispersion V

r > v very strong

Pure color

yellow-orange

Color

yellow brown, yellow orange, red orange

Diaphaneity

translucent

Luster

vitreous

Links

• MinDAT: Pascoite
• WebMineral: Pascoite
• Wikipedia: Pascoite