Matter
Name
Pigment Beauregard facies A (PIG_0174_A), hematite-rich vein
Family
mineral
Comments
also contain trace amount of Manganese oxydes and clay minerals (not detected by DRX)
Level
from laboratory repository
Origins
natural terrestrial
Provider
Pigmenthothèque - EDYTEM
Provider reference code
Beauregard – PIG_0174_A (2016-023) / BRG-PSC-34
Local reference code
PIG_0174_A_Beauregard
Body name
Earth
Terrain type
mineral surface
Place
Thoste, Côte d'Or , Bourgogne-Franche-Comté , France

Coordinates

System
WGS84
Position type
point
Geolocation
Point Latitude Longitude Altitude
#1 47.44768° 4.22644°
Comments
in heap
Preparation
raw
Storage condition
room temperature and conditions
Phase type
solid
Component type (group)
sedimentary rock (iron-sediment or ironstone)
Comments
Ferruginised crinoid-rich wackstone-packstone containing entirely ferruginised crinoid fragments (3mm) in a hematite-rich cement - Era: Mesozoic, lower Jurassic, Hettangien ferrugineux
Shape
Irregular equant shaped bordeaux block with approximate size 24x20x10mm (4.04g) with one brown patinated face (face #2) and the other faces are brown, fresh, very porous and brittle (face #1 +...)
Texture
compact fine grained
Type of porosity
closed pores
Porosity
0.4
Texture
compact
Grain compacity
0.6
Grain sizes
Grains Size min Size max Size median Size width Size mass fraction Grain shape
#1 0.0 ${\mu}m$ 500.0 ${\mu}m$ None
Size distribution
Hematite (>90%): < ? µm, Quartz (< 5%): 200-500µm, Fluorite (< 5%): 100-200µm, Baryte (< 5%): 100-200µm)
Comments
40% of meso-macropores
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 (%) 8.51 2.48 75.94 2.82 0.07 1.54 0.015 0.32 0.1 0.46
Oxides comments
Contain Mn and Ca (4.36% in oxide) and small impurity of P, Ti, Na, K, Mg, (0.97% in oxides), fire loss: 5.66%
Number
4
Mode of mixing
heterogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Hematite-goethite hematite and minor amount of goethite both in cement and as pseudomorphosis of bioclasts (crinoids and others) 0.917 91.7% of the crystalline phases
Quartz grains embeded in a ferric matrix (hematite + some goethite), isolated 0.05 < 5%. Assumed mass fraction = cross section fraction
Fluorite grains embeded in a ferric matrix (hematite + some goethite), isolated 0.05 < 5%. Assumed mass fraction = cross section fraction
Baryte grains embeded in a ferric matrix (hematite + some goethite), isolated 0.05 < 5%. Assumed mass fraction = cross section fraction