Matter
Name
Pigment Pierrerue (PIG_0176_A), bauxite
Family
mineral
Level
from laboratory repository
Origins
natural terrestrial
Provider
Pigmenthothèque - EDYTEM
Provider reference code
Pierrerue – PIG_0176_A (2016-025)
Local reference code
PIG_0176_A_Pierrerue
Body name
Earth
Terrain type
mineral surface
Place
Pierrerue, Hérault , Occitanie , France

Coordinates

System
WGS84
Position type
point
Geolocation
Point Latitude Longitude Altitude
#1 43.42654° 2.97959°
Comments
in road cut
Preparation
raw
Storage condition
room temperature and conditions
Phase type
solid
Component type (group)
sedimentary rock (iron-sediment or ironstone)
Comments
Ferruginous pisoliths formed within ferruginous clay - Era: Mesozoic, Middle Jurassic
Shape
small irregular red block with some concave faces (faces #1 and #2). Two other faces with white fractured surficial layer
Texture
compact poor grained
Type of porosity
without pores
Texture
compact
Size distribution
no visible grain
Comments
large (> 2mm) pisoliths visible with naked eye
Oxides
Formula $SiO_{2}$ $Al_{2}O_{3}$ $Fe_{2}O_{3}$ $MnO$ $MgO$ $CaO$ $Na_{2}O$ $K_{2}O$ $TiO_{2}$ $P_{2}O_{5}$
Mass fraction (%) 24.79 21.12 41.99 0.022 0.06 0.21 0.02 0.09 1.03 0.1
Oxides comments
Contain Ti (1.03% in oxide) and small impurity of Mn, Mg, Ca, Na, K, P (0.5% in oxides), fire loss: 9.2%
Number
3
Mode of mixing
heterogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Pisoliths: Hematite with kaolinite dominant
Edge of the Pisoliths: kaolinite-calcite-goethite concentrated at the edge of the pisoliths
Alumino-ferruginous clay