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Hematite
Hematite

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Hematite and Adamite

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1 Physical
1.1 Mohs Hardness
6.5
3.5
1.2 Luster
Metallic
Vitreous Resinous
1.3 Cleavage
None, may show partings on {0001} and {10 1 1}
{101}, good; {010}, poor
1.4 Fracture
Conchoidal Fractures developed in brittle materials characterized by smoothly curving surfaces
Brittle Generally displayed by glasses and most non-metallic minerals.
1.5 Streak
red
white to pale green
1.6 Bulk Density
Osmium
5.04
Rank: 100 (Overall)
4.16
Rank: 100 (Overall)
Kurilite
1.7 Tenacity
Brittle
Brittle
2 Chemical
2.1 Formula
2.1.1 Chemical Formula
Fe2O3
Zn2(AsO4)(OH)
2.1.2 Empirical Formula
Fe3+2O3
Zn2(AsO4)(OH)
2.2 Crystal Properties
2.2.1 Crystal System
Trigonal
Orthorhombic
2.2.2 Space group
Trigonal Hexagonal Scalenohedral H-M Symbol ( 3 2/m) Space Group: R 3 c
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
2.2.3 Crystal Habit
Tabular to thick crystals; micaceous or platy, commonly in rosettes; radiating fibrous, reniform, botryoidal or stalactitic masses, columnar; earthy, granular, oolitic
Wedge-like prisms typically in druses and radiating clusters also smooth botryoidal masses.
2.2.4 Crystal Class
Hexagonal scalenohedral ( 3 m)
Dipyramidal (mmm)
2.2.5 Twinning
Penetration and lamellar
Not Available
2.3 Molecular Weight
Proudite
159.69
Rank: 100 (Overall)
286.71
Rank: 100 (Overall)
Diamond
3 Atomic
3.1 Axial Ratios
a:c = 1:2.73009
a:b:c =0.9744:1:0.7089
3.2 Fermion Index
Maldonite
0.01
Rank: 37 (Overall)
0.01
Rank: 37 (Overall)
Algodonite
3.3 Boson Index
Algodonite
0.99
Rank: 100 (Overall)
0.99
Rank: 100 (Overall)
Urea
3.4 Cell Dimensions
3.4.1 a
Mesolite
5.03
Rank: 100 (Overall)
8.31
Rank: 100 (Overall)
Graphite
3.4.2 b
Liveingite
Not Available
Rank: 100 (Overall)
8.52
Rank: 100 (Overall)
Tantalcarbide
3.4.3 c
Taranakite
13.74
Rank: 100 (Overall)
6.04
Rank: 100 (Overall)
Tiettaite
3.4.4 alpha
Nefedovite
Not Available
Rank: 100 (Overall)
Not Available
Rank: 100 (Overall)
Schneiderhohnite
3.4.5 beta
Catapleiite
Not Available
Rank: 100 (Overall)
Not Available
Rank: 100 (Overall)
Harmotome
3.4.6 gamma
Rhonite
Not Available
Rank: 100 (Overall)
Not Available
Rank: 100 (Overall)
Hemihedrite
4 Optical
4.1 Photoelectric
Natronambulite
Not Available
Rank: 100 (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: 100 (Overall)
0.00
Rank: 100 (Overall)
Abelsonite
4.3 By Intensity
2.69(1), 1.69(0.6), 2.51(0.5
2.45(1), 2.97(0.9), 4.9(0.9
4.4 Specific Gravity
Osmium
5.30
Rank: 100 (Overall)
4.45
Rank: 100 (Overall)
Kurilite
4.5 Diaphaneity
Opaque
Subtransparent
4.6 Luminescence
Non-fluorescent.
Fluorescent
4.7 Birefringence
0
0
4.8 Pleochroism
O = brownish red; E = yellowish red
Not Available
5 Classification
5.1 Category
Oxide minerals
Arsenate minerals
5.2 IMA Status
Valid Species (Pre-IMA) Prehistoric
Valid Species (Pre-IMA) 1866
5.3 Dana Class
04.03.01.02
41.06.06.03
5.4 Strunz Class
04.CB.05
08.BB.30
6 Facts
6.1 Origin
Magmatic, hydrothermal, metamorphic and sedimentary.
Not Available
6.2 Locality
Matto Grosso, Brazil. Mesabi iron ore range, Minnesota, USA. Link to  MinDat.org Location Data.
Chile, Atacama, Chañarcillo Link to  MinDat.org Location Data.
6.3 Name Origin
From the Greek, haimatites, bloodlike in allusion to vivid red color of the powder.
Named after the French mineralogist Gilbert Joseph Adam (1795-1881).
6.4 Color
Red, From the Greek, Not Available, Not Available, Not Available, Not Available
Yellow, White, Blue, Yellow, Honey-yellow, White, Colorless, Blue, Green, Adamite, Comments: Sprays of adamite with intense color and well defined crystals which stand out from the matrix. Location: Ojuela mine, Mapimi, Durango, Mexico. Scale: 5 x 5 cm., © Fabre Minerals
6.5 Name Synonym
ICSD 64599
Cuproadamite Cu-bearing adamite
6.6 Uses
The most important ore of iron. Pigment, heavy media separation, radiation shielding, ballast, polishing compounds, a minor gemstone
Not Available

Hematite and Adamite 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 Hematite and Adamite. The appearance of a mineral is greatly influenced during its formation. Hematite and Adamite information will help you understand how these minerals are found in nature. Here you can know all about it. Hematite mineral belongs to Oxide minerals and Adamite belongs to Arsenate minerals. It is also important to know the IMA status of a mineral, for the first mineral IMA status is Valid Species (Pre-IMA) Prehistoric and for second mineral it is Valid Species (Pre-IMA) 1866. Another important aspect is the minerals strength or hardness, Hematite has Mohs Hardness between 6.5 while Adamite has a hardness of 3.5.

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