Matter
Name
Pigment Roussillon (PIG_0173_A_602), Red Ochre - grains sup. 160µm
Family
mineral
Comments
Red ochre (kaolinite-hematite-goethite-quartz)
Parent matter
Pigment Roussillon (PIG_0173_A), Red Ochre
Level
from laboratory repository
Origins
natural terrestrial
Provider
Pigmenthothèque - EDYTEM
Provider reference code
Roussillon > 160 µm – PIG_0173_A_602 (2016-022)
Local reference code
PIG_0173_A_602_Roussillon-sup160
Body name
Earth
Terrain type
mineral surface
Place
Ochre mine, Roussillon (Vaucluse) , Provence-Alpes-Côte d’Azur , France

Coordinates

System
WGS84
Position type
point
Geolocation
Point Latitude Longitude Altitude
#1 43.89833° 5.29685° 340.0 m
Preparation
sieved fraction
Method
crushed and sieved with a mesh of 160 µm
Storage condition
room temperature and conditions
Phase type
solid
Component type (group)
sedimentary rock (iron-sediment or ironstone)
Comments
ferricrust fragment from the weathering profile of albian (C1b) glauconitic sandstones and sands
Shape
coarse dark red powder
Texture
loose coarse grained
Type of porosity
particulate
Density
1.46 $\pm$ 0.1 $g.cm^{-3}$
Texture
compact microporous
Grain density
1.46 $\pm$ 0.1 $g.cm^{-3}$
Grain sizes
Grains Size min Size max Size median Size width Size mass fraction Grain shape
#1 160.0 ${\mu}m$ 400.0 ${\mu}m$ None
#2 400.0 ${\mu}m$ 4000.0 ${\mu}m$ equant
Size distribution
mostly below 400 µm, but a few grains with 400-4000 µm
Size method
sieving with mesh of 160 µm
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 (%) 31.48 8.09 52.88 0.01125 0.02 0.0225 0.015 0.06 0.23 0.56
Oxides comments
fire loss: 5.92%
Number
2
Mode of mixing
homogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Quartz, grains sup. 160µm quartz grains embeded in an argilo-ferric matrix (kaolinite, hematite and some goethite) mass fraction unknown but areal fraction in cross section is ~60% in raw matter before sieving. impurity abundances not determined
kaolinite clay with hematite and goethite clay-ferric matrix (kaolinite, hematite and some goethite) surrounding quartz grains mass fraction unknown but areal fraction in cross section is ~40% in raw matter before sieving. Small impurity of P, Ti, K, Na, Ca, Mg, Mn (0.92% in oxides)