Davyne

Overview

Na4K2Ca2Si6Al6O24(SO4)Cl2
Fluorescence: none	Barely Detectable Radiation	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.42-2.53 g/cc
Hardness - Mohs	Davyne - 6  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	colorless, white
Streak	white

Crystal Properties

Property	Value
Crystal structure	hexagonal - dipyramidal
Cleavage	perfect
Tenacity	brittle
Fracture	conchoidal
Luster	vitreous, glassy

Similar Minerals

Dana Number : 76.02.05.05

Class: 76

Group: 76.02

Subgroup: 76.02.05 - cancrinite

Dana Number	Mineral Name	Formula
76.02.05.01	afghanite	(Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O)
76.02.05.03	cancrinite	Na6Ca2Al6Si6O24(CO3)2
76.02.05.04	cancrisilite	Na7Al5Si7O24(CO3)·3(H2O)
76.02.05.05	davyne	Na4K2Ca2Si6Al6O24(SO4)Cl2
76.02.05.06	franzinite	(Na,Ca)7(Si,Al)12O24(SO4,CO3,OH)3·(H2O)
76.02.05.09	liottite	(Ca,Na,K)8(Si,Al)12O24((SO4),(CO3),Cl,OH)4·(H2O)
76.02.05.14	tounkite	(Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O)
76.02.05.15	vishnevite	(Na,Ca,K)6(Si,Al)12O24((SO4),CO3)Cl2)2-4·n(H2O)
76.02.05.18	farneseite	(Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12·6(H2O)
76.02.05.22	kyanoxalite	Na7(Al5-6Si6-7O24)(C2O4)0.5-1·5(H2O)

Nickel-Strunz Number : 09.FB.05

Group : 09

Subgroup : FB

Nickel-Strunz Number	Mineral Name	Formula
09.FB.05	afghanite	(Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O)
09.FB.05	cancrinite	Na6Ca2Al6Si6O24(CO3)2
09.FB.05	cancrisilite	Na7Al5Si7O24(CO3)·3(H2O)
09.FB.05	davyne	Na4K2Ca2Si6Al6O24(SO4)Cl2
09.FB.05	farneseite	(Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12·6(H2O)
09.FB.05	franzinite	(Na,Ca)7(Si,Al)12O24(SO4,CO3,OH)3·(H2O)
09.FB.05	liottite	(Ca,Na,K)8(Si,Al)12O24((SO4),(CO3),Cl,OH)4·(H2O)
09.FB.05	tounkite	(Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O)
09.FB.05	vishnevite	(Na,Ca,K)6(Si,Al)12O24((SO4),CO3)Cl2)2-4·n(H2O)

Specimens

Localities

Uses