| Argutite | |
| Category: | Oxide mineral |
| Formula: | GeO2 |
| Imasymbol: | Agt[1] |
| Molweight: | 104.61 |
| Strunz: | 4.DB.05 |
| Dana: | 04.04.01.07 |
| System: | Tetragonal Ditetragonal dipyramidal class |
| Symmetry: | Tetragonal H–M Symbol: (4/m 2/m 2/m) Space group: P42/mnm |
| Unit Cell: | a = 4.3975, c = 2.8625 [Å]; Z = 2 |
| Color: | Grayish black, light gray in reflected light |
| Habit: | Subhedral crystals, as inclusions in sphalerite |
| Twinning: | Occasionally twinned on |
| Mohs: | 6-7 |
| Luster: | Vitreous - adamantine |
| Refractive: | 2.01 |
| Opticalprop: | Uniaxial (+) |
| Gravity: | 6.28 calculated |
| Diaphaneity: | Transparent to opaque |
| References: | [2] [3] [4] |
Argutite (GeO2) is a rare germanium oxide mineral. It is a member of the rutile group.
It was first described for an occurrence in the Argut deposit, central Pyrenees, Haute-Garonne, France in 1983.[3] [4] The type locality is within a zinc ore deposit within lower Paleozoic sedimentary rocks that have undergone metamorphism. Associated minerals include sphalerite, cassiterite, siderite and briartite.[4]