AM-2026-00009-A · Augiteunverified
The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 1
| designation | Augite |
|---|---|
| chemical formula | (Ca,Na)(Mg,Fe,Al)(Si,Al)₂O₆ |
| classification | Inosilicate / Pyroxene group |
| crystal system | Monoclinic |
| mohs hardness | 5.5 – 6 |
| density (g/cm³) | 3.19 – 3.56 |
| colour | Black to dark green |
| type locality | Merelani Hills, Manyara, Tanzania |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 326, 665, 1012
notessubmitter remarks + registry
Stubby prismatic crystal of dark green to black colouration, exhibiting typical {110} cleavage. Submitted as part of a small consignment of Merelani Hills material; locality recorded to mine area only.
chain of custody2 events · 0 seal-breaks
Events recorded against this accession in the registry's printed custody book. Operator initials are anonymous. Storage codes follow the convention vault-shelf-drawer.
| timestamp | stage | detail | op. |
|---|---|---|---|
| 2026-06-15 15:55 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2026-06-16 13:19 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | C.B. |
physical location: vault D · shelf 11 · drawer 19 · last documented inspection: 2026-06-16 13:19 UTC