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Definition Of:

Johnsomervilleite

Mineralogy Dictionary

General Information:

Chemical Formula:Na2Ca(Mg,Fe++,Mn)7(PO4)6

IMA Status:Approved IMA 1979Physical Properties:

Cleavage:[???] Perfect

Color:dark brown.

Density:3.35

Diaphaniety:Transparent to Translucent

Hardness:4.5 - Between Fluorite and Apatite

Luster:Vitreous (Glassy)

Streak:light brownMore details...

See also: Oboyerite , Minasgeraisite-(Y) , Grandreefite , Eugenite , Whiteite-(CaFeMg)

Mineralogy Dictionary INDEX:

List of Terms: Terms beginning with "A", Page 1

Starts With: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Page Number: 1 2 3 4

A: Page 1 of 4.

Abelsonite	Abenakiite-(Ce)	Abernathyite
Abhurite	Abswurmbachite	Acanthite
Acetamide	Actinides	Actinium (Ac)
Actinolite	Acuminite	Adamite
Adelite	Admontite	Aegirine
Aegirine-augite	Aenigmatite	Aerinite
Aerugite	Aeschynite-(Ce)	Aeschynite-(Nd)
Aeschynite-(Y)	Afghanite	Afwillite
Agardite-(Ca)	Agardite-(Ce)	Agardite-(Dy)
Agardite-(La)	Agardite-(Nd)	Agardite-(Y)
Agrellite	Agrinierite	Aguilarite
Aheylite	Ahlfeldite	Aikinite
Ajoite	Akaganeite	Akatoreite
Akdalaite	Akermanite	Akhtenskite
Akimotoite	Akrochordite	Aksaite
Aktashite	Alabandite	Alacranite
Alamosite	Alarsite	Albite
Albrechtschrau...	Aldermanite	Aleksite
Alforsite	Algodonite	Aliettite
Allactite	Allanite-(Ce)	Allanite-(La)
Allanite-(Y)	Allargentum	Alleghanyite
Alloclasite	Allophane	Alluaivite
Alluaudite

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