Almandine
FeII 3 Al2 (SiO4 )3
Garnet
—
Open
Garnet specimen from Idaho, USA
©
Photo by Chip Clark, via Smithsonian National Museum of Natural History
0
1
Reflectance
Mineral, Aluminosilicate
Almarudite
K(☐,Na)2 (Mn,Fe,Mg)2 [(Be,Al)3 Si12 ]O30
Osumilite (group)
—
0
0
—
Mineral, Aluminosilicate
Alstonite
BaCa(CO3 )2
—
—
Open
Specimen of alstonite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, Cumbria, England, UK
©
Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
0
—
Mineral, Carbonate
Altaite
PbTe
Galena (group)
—
0
0
—
Mineral
Alumina
Al2 O3
—
Corundum
Open
Photograph of aluminium oxide
©
Photo by Ondřej Mangl, Public Domain
25
1
CL/SEM
Simple oxide , Synthetic , Compound
Aluminium
Al
—
Steinhardtite
Open
©
CC-BY-SA 3.0, images-of-elements.com
6
2
SXES
Mineral, Element , Metal
Aluminium nitride
AlN
—
—
18
0
—
Synthetic , Compound, Nitride
Aluminium orthophosphate
AlPO4
—
Berlinite
Open
Synthetic Berlinite (AlPO4) crystals grown by a hydrothermal process
©
Photo by DMGualtieri, CC-BY-SA 3.0
2
0
—
Orthophosphate , Phosphate , Synthetic , Compound
Alumino-oxy-rossmanite
☐Al3 Al6 (Si5 AlO18 )(BO3 )3 (OH)3 O
Tourmaline
—
0
0
—
Mineral, Hydroxide , Borate , Aluminosilicate
Aluminocerite-(Ce)
(Ce,REE,Ca)9 (Al,FeIII )(SiO4 )3 [SiO3 (OH)]4 (OH)3
Cerite (subgroup)
—
0
0
—
Mineral, Hydroxide , Silicate
Aluminosugilite
KNa2 Al2 Li3 Si12 O30
Osumilite (group)
—
0
0
—
Mineral, Silicate
Amakinite
Fe(OH)2
Iron(II) hydroxide , Brucite (group)
—
0
0
—
Mineral, Hydroxide
Amazonite
KAlSi3 O8
Microcline
—
Open
Microcline (var. amazonite) and quartz, from Smoky Hawk claim, Crystal Peak area, Teller County, Colorado, USA. Size: 10.7 x 7.0 x 5.7 cm
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
0
—
Aluminosilicate , Variety
Amblygonite
LiAl(PO4 )F
Amblygonite (group)
—
Open
Faceted amblygonite gem, from Ceará, Brazil. Specimen M 36903, Museums Victoria.
©
Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
1
0
—
Mineral, Orthophosphate , Phosphate
Amblygonite (group)
LiM III (PO4 )(OH,F), M =Al,Fe
—
Tavorite , Amblygonite , Montebrasite
0
0
—
Group , Orthophosphate , Phosphate