Manganese
Mn
—
—
Open
Two pieces of manganese metal
©
(C) 2005 W. Oelen (via Wikimedia Commons). CC-BY-SA-3.0
10
2
SXES
Metal , Element
Manganese oxyhydroxide
MnOOH
—
—
5
0
IR
Hydroxide , Compound
Marcasite
FeS2
—
—
Open
Marcasite (FeS2) from Zeche Friedrich Der Grasse Herne, North Rhine-Westphalia, Germany
©
Photo by Svea Lin Rodgers, Smithsonian Institution, CC0
6
0
IR
Mineral, Sulphide
Masuyite
Pb(UO2 )3 O3 (OH)2 ·3H2 O
Minerals containing H2O , Minerals containing OH
—
Open
Masuyite (red spherical aggregates) and becquerelite (yellow) with fourmarierite (dark red/umber), on uraninite matrix, from Shinkolobwe, Katanga, Democratic Republic of Congo
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
4
0
PL
Hydroxide , Mineral, Uranyl , Hydrated
Meionite
Ca4 Al6 Si6 O24 (CO3 )
Minerals containing CO3 , Scapolite (group)
—
Open
Meionite (scapolite) crystals in a quartz matrix, from Bolton Lime Quarries, Bolton, Worcester Co., MA, USA
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
9
2
Reflectance
Mineral, Aluminosilicate , Carbonate
Meliphanite
Ca4 (Na,Ca)4 Be4 AlSi7 O24 (F,O)4
—
—
Open
Meliphanite specimen from Langesundsfjorden, Larvik, Vestfold, Norway
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
22
0
IL, PL, PL/XL
Mineral, Aluminosilicate
Mercury sulphide
HgS
—
Cinnabar , Hypercinnabar
Open
©
2009 JJ Harrison (https://www.jjharrison.com.au/), CC-BY-SA-3.0
0
1
SXES
Sulphide , Compound
Merwinite
Ca3 Mg(SiO4 )2
Minerals containing SiO4
—
1
0
PL
Mineral, Silicate
Mesolite
Na2 Ca2 (Si9 Al6 )O30 ·8H2 O
Minerals containing H2O
—
1
0
PL
Mineral, Hydrated , Aluminosilicate
Meta-autunite
Ca(UO2 )2 (PO4 )2 ·6H2 O
Meta-autunite (group) , Minerals containing H2O , Minerals containing PO4
—
Open
Specimen of meta-autunite, from Les Ruaux mine, St Symphorien-de-Marmagne, Montcenis, Burgundy, France. Specimen M 27680, Museums Victoria.
©
Photo by Frank Coffa, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
12
0
PL
Mineral, Orthophosphate , Hydrated , Uranyl , Phosphate
Metanatroautunite
Na(UO2 )(PO4 )·3H2 O
Meta-autunite (group) , Minerals containing H2O , Minerals containing PO4
—
Open
Metanatroautunite specimen from granite quarry, 10 km south-south-west of Lake Boga, Victoria, AU. Specimen M 47385, Museums Victoria.
©
Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
9
0
PL
Mineral, Orthophosphate , Phosphate , Uranyl , Hydrated
Mica
A Z 2-3 (X , Si)4 O10 (O, F, OH)2
Clay
Margarite , White mica , Zinnwaldite , Paragonite , Tainiolite , Dark mica , Lepidolite , Illite-Smectite 12.0A , Polylithionite , Muscovite , Muscovite-Paragonite (series) , Biotite , Celadonite , Illite-Smectite 11.5A , Glauconite
Open
Muscovite specimen from Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil. Size: 6 x 5.3 x 3.9 cm
©
2010 Rob Lavinsky, iRocks.com, CC-BY-SA-3.0
1
0
Reflectance
Hydroxide , Group , Silicate
Microcline
KAlSi3 O8
K feldspar
Amazonite
Open
Microcline (var. amazonite) specimen from Crystal Peak, Park Co., CO, USA
©
Photo by Chip Clark, via Smithsonian National Museum of Natural History
9
1
Reflectance
Mineral, Aluminosilicate
Microlite
(Na,Ca)2 Ta2 O6 (O,OH,F)
Microlite (group)
—
Open
Microlite from Amelia, Amelia County, Virginia, USA. Size: 4.6 x 3.3 x 2.9 cm
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
5
0
PL
—
Milarite
KCa2 (Be2 AlSi12 )O30 ·H2 O
Osumilite (group) , Minerals containing H2O
—
Open
Milarite specimen from Venero 1 Quarry, Cadalso de los Vidrios, Madrid, Spain
©
Photo by Christian Rewitzer (on wikimedia.org), CC-BY-SA 3.0
6
0
PL, PL/XL
Mineral, Silicate , Hydrated