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Cafetite
Cafetite

Hematite
Hematite



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Cafetite and Hematite

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1 Physical
1.1 Mohs Hardness
4-5
6.5
1.2 Luster
Adamantine
Metallic
1.3 Cleavage
Prismatic
None, may show partings on {0001} and {10 1 1}
1.4 Fracture
Brittle Generally displayed by glasses and most non-metallic minerals.
Conchoidal Fractures developed in brittle materials characterized by smoothly curving surfaces
1.5 Streak
white
red
1.6 Bulk Density
Osmium
3.20
Rank: N/A (Overall)
5.04
Rank: 100 (Overall)
Kurilite
1.7 Tenacity
Brittle
Brittle
2 Chemical
2.1 Formula
2.1.1 Chemical Formula
Ca(Fe,Al)2Ti4O12•4(H2O)
Fe2O3
2.1.2 Empirical Formula
CaFe2+1.5Al0.5Ti4O12•4(H2O)
Fe3+2O3
2.2 Crystal Properties
2.2.1 Crystal System
Monoclinic
Trigonal
2.2.2 Space group
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Trigonal Hexagonal Scalenohedral H-M Symbol ( 3 2/m) Space Group: R 3 c
2.2.3 Crystal Habit
Elongated columnar to acicular crystals, fibrous aggregates, pseudo- orthorhombic
Tabular to thick crystals; micaceous or platy, commonly in rosettes; radiating fibrous, reniform, botryoidal or stalactitic masses, columnar; earthy, granular, oolitic
2.2.4 Crystal Class
Prismatic (2/m)
Hexagonal scalenohedral ( 3 m)
2.2.5 Twinning
Not Available
Penetration and lamellar
2.3 Molecular Weight
Proudite
592.91
Rank: N/A (Overall)
159.69
Rank: 100 (Overall)
Diamond
3 Atomic
3.1 Axial Ratios
a:b:c =0.4084:1:1.3139
a:c = 1:2.73009
3.2 Fermion Index
Maldonite
0.04
Rank: 34 (Overall)
0.01
Rank: 37 (Overall)
Algodonite
3.3 Boson Index
Algodonite
0.96
Rank: N/A (Overall)
0.99
Rank: 100 (Overall)
Urea
3.4 Cell Dimensions
3.4.1 a
Mesolite
4.95
Rank: N/A (Overall)
5.03
Rank: 100 (Overall)
Graphite
3.4.2 b
Liveingite
12.11
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Tantalcarbide
3.4.3 c
Taranakite
15.91
Rank: N/A (Overall)
13.74
Rank: 100 (Overall)
Tiettaite
3.4.4 alpha
Nefedovite
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Schneiderhohnite
3.4.5 beta
Catapleiite
98.94 °
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Harmotome
3.4.6 gamma
Rhonite
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Hemihedrite
4 Optical
4.1 Photoelectric
Natronambulite
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Hartite
4.2 Radioactivity
No Common Minerals Minerals has it !
No Common Minerals Minerals has it !
4.2.1 GRapi
Melanocerite Ce
0.00
Rank: N/A (Overall)
0.00
Rank: 100 (Overall)
Abelsonite
4.3 By Intensity
7.86(1), 2.56(0.8), 1.91(0.7
2.69(1), 1.69(0.6), 2.51(0.5
4.4 Specific Gravity
Osmium
3.28
Rank: N/A (Overall)
5.30
Rank: 100 (Overall)
Kurilite
4.5 Diaphaneity
Semitransparent
Opaque
4.6 Luminescence
Not Available
Non-fluorescent.
4.7 Birefringence
0.16
0
4.8 Pleochroism
none
O = brownish red; E = yellowish red
5 Classification
5.1 Category
Oxide minerals
Oxide minerals
5.2 IMA Status
Approved IMA 1959
Valid Species (Pre-IMA) Prehistoric
5.3 Dana Class
08.07.03.01
04.03.01.02
5.4 Strunz Class
04.FL.75
04.CB.05
6 Facts
6.1 Origin
In miarolitic cavities in pegmatites cutting pyroxenite. Later work suggests that Fe was a contaminent from magnetite and not an essential part of the formula.
Magmatic, hydrothermal, metamorphic and sedimentary.
6.2 Locality
Afrikanda massif, Kola Peninsula, Russia. Link to  MinDat.org Location Data.
Matto Grosso, Brazil. Mesabi iron ore range, Minnesota, USA. Link to  MinDat.org Location Data.
6.3 Name Origin
Named for the composition (Ca, Fe, Ti).
From the Greek, haimatites, bloodlike in allusion to vivid red color of the powder.
6.4 Color
Yellow, Colorless, Not Available
Red, From the Greek, Not Available, Not Available, Not Available, Not Available
6.5 Name Synonym
Not Available
ICSD 64599
6.6 Uses
Not Available
The most important ore of iron. Pigment, heavy media separation, radiation shielding, ballast, polishing compounds, a minor gemstone

Cafetite and Hematite Information

Minerals are solid substances, occurring naturally. Minerals are not organic compounds as their origins are inorganic. Interestingly, the process of formation of minerals do result from organic processes. The way in which the minerals are formed affects the Cafetite and Hematite. The appearance of a mineral is greatly influenced during its formation. Cafetite and Hematite information will help you understand how these minerals are found in nature. Here you can know all about it. Cafetite mineral belongs to Oxide minerals and Hematite belongs to Oxide minerals. It is also important to know the IMA status of a mineral, for the first mineral IMA status is Approved IMA 1959 and for second mineral it is Valid Species (Pre-IMA) Prehistoric. Another important aspect is the minerals strength or hardness, Cafetite has Mohs Hardness between 4-5 while Hematite has a hardness of 6.5.

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