Matter
Name
Pigment Roussillon (PIG_0173_A_607), Red Ochre - grains inf. 50µm
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 < 50 µm – PIG_0173_A_607 (2016-022)
Local reference code
PIG_0173_A607_Roussillon_inf50
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 50 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
fine dark red powder
Texture
pulverulent
Type of porosity
particulate
Density
0.64 $\pm$ 0.1 $g.cm^{-3}$
Texture
compact microporous
Grain density
0.64 $\pm$ 0.1 $g.cm^{-3}$
Grain sizes
Grains Size min Size max Size median Size width Size mass fraction Grain shape
#1 0.0 ${\mu}m$ 50.0 ${\mu}m$ 1.0 None
Size method
sieving with mesh of 50 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 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)