Medaite

Overview

(Mn,Ca)6(V+5,As)Si5O18(OH)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.7 g/cc
Hardness - Mohs	Medaite - -  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	brown red
Streak	yellow white

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	good
Tenacity	brittle
Fracture	-
Luster	subadamantine

Similar Minerals

Dana Number : 57.04.01.01

Class: 57

Group: 57.04

Subgroup: 57.04.01 - medaite

Dana Number	Mineral Name	Formula
57.04.01.01	medaite	(Mn,Ca)6(V+5,As)Si5O18(OH)

Nickel-Strunz Number : 09.BJ.30

Group : 09

Subgroup : BJ

Nickel-Strunz Number	Mineral Name	Formula
09.BJ.30	medaite	(Mn,Ca)6(V+5,As)Si5O18(OH)

Specimens

Localities

Uses