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|Name:||Gageite was named in 1910 by Alexander Hamilton Phillips in honor of Robert Burns Gage [November 20, 1875 Kaneville, Venango County, Pennsylvania, USA - 1946], of Trenton, New Jersey, USA, chemist with the New Jersey Highway Department. Gage analyzed the first specimens of gageite. Gage named chlorophoenicite and schallerite.|
A polytype of Gageite
Classification of Gageite-2M
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Dana 8th edition ID:||18.104.22.168a|
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
3 : Single-Width Unbranched Chains, W=1 with chains P=4
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Type Occurrence of Gageite-2M
|Type Locality:||Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA|
Physical Properties of Gageite-2M
Crystallography of Gageite-2M
Optical Data of Gageite-2M
|RI values:||nα = 1.720 nβ = 1.730 nγ = 1.730|
|2V:||Measured: 20° to 50°|
|Maximum Birefringence:||δ = 0.010|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Gageite-2M
|Simplified for copy/paste:||(Mn,Mg,Zn)42Si16O54(OH)40|
|Essential elements:||H, Mn, O, Si|
|All elements listed in formula:||H, Mg, Mn, O, Si, Zn|
Other Names for Gageite-2M
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Gageite-2M
American Mineralogist (1987): 72: 382-391.
Internet Links for Gageite-2M
Localities for Gageite-2M
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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Locality Updated: Porto de Mós, Porto de Mós, Leiria District, PortugalFrom Rui Nunes, 26th Nov 2014 17:29:27