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Brucite
Brucite

Hematite
Hematite



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Brucite and Hematite

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1 Physical
1.1 Mohs Hardness
2.5-3
6.5
1.2 Luster
Vitreous Pearly
Metallic
1.3 Cleavage
Perfect on {0001}
None, may show partings on {0001} and {10 1 1}
1.4 Fracture
Irregular Flat surfaces (not cleavage) fractured in an irregular pattern.
Conchoidal Fractures developed in brittle materials characterized by smoothly curving surfaces
1.5 Streak
white
red
1.6 Bulk Density
Osmium
2.44
Rank: N/A (Overall)
5.04
Rank: 100 (Overall)
Kurilite
1.7 Tenacity
Sectile
Brittle
2 Chemical
2.1 Formula
2.1.1 Chemical Formula
Mg(OH)2
Fe2O3
2.1.2 Empirical Formula
Mg(OH)2
Fe3+2O3
2.2 Crystal Properties
2.2.1 Crystal System
Trigonal
Trigonal
2.2.2 Space group
Trigonal Hexagonal Scalenohedral H-M Symbol ( 3 2/m) Space Group: P 3 m1
Trigonal Hexagonal Scalenohedral H-M Symbol ( 3 2/m) Space Group: R 3 c
2.2.3 Crystal Habit
Tabular crystals; platy or foliated masses and rosettes – fibrous to massive
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
Hexagonal scalenohedral ( 3 m)
Hexagonal scalenohedral ( 3 m)
2.2.5 Twinning
Not Available
Penetration and lamellar
2.3 Molecular Weight
Proudite
58.32
Rank: N/A (Overall)
159.69
Rank: 100 (Overall)
Diamond
3 Atomic
3.1 Axial Ratios
a:c = 1:1.51541
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
3.15
Rank: N/A (Overall)
5.03
Rank: 100 (Overall)
Graphite
3.4.2 b
Liveingite
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Tantalcarbide
3.4.3 c
Taranakite
4.77
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
Not Available
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
1.01 barns/electron
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
2.365(1), 4.77(0.9), 1.794(0.55
2.69(1), 1.69(0.6), 2.51(0.5
4.4 Specific Gravity
Osmium
2.37
Rank: N/A (Overall)
5.30
Rank: 100 (Overall)
Kurilite
4.5 Diaphaneity
Transparent
Opaque
4.6 Luminescence
Non-fluorescent.
Non-fluorescent.
4.7 Birefringence
0
0
4.8 Pleochroism
Not Available
O = brownish red; E = yellowish red
5 Classification
5.1 Category
Oxide minerals
Oxide minerals
5.2 IMA Status
Valid Species (Pre-IMA) 1824
Valid Species (Pre-IMA) Prehistoric
5.3 Dana Class
06.02.01.01
04.03.01.02
5.4 Strunz Class
04.FE.05
04.CB.05
6 Facts
6.1 Origin
It occurs in serpentine, in chlorite or dolomitic schists, or in crystalline limestones as an alteration product of periclase.
Magmatic, hydrothermal, metamorphic and sedimentary.
6.2 Locality
New Jersey, USA serpentine. Asbestos mines of Asbestos and Black Lake in Quebec, Canada. crystalline limestones at Crestmore, California, USA. 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 after the American mineralogist, A. Bruce (1777-1818).
From the Greek, haimatites, bloodlike in allusion to vivid red color of the powder.
6.4 Color
White, Blue, Yellow, Red, Blue, Not Available, Gray blue, Yellow, White., White, Not Available, Blue, Not Available
Red, From the Greek, Not Available, Not Available, Not Available, Not Available
6.5 Name Synonym
ICSD 64722
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

Brucite 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 Brucite and Hematite. The appearance of a mineral is greatly influenced during its formation. Brucite and Hematite information will help you understand how these minerals are found in nature. Here you can know all about it. Brucite 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 Valid Species (Pre-IMA) 1824 and for second mineral it is Valid Species (Pre-IMA) Prehistoric. Another important aspect is the minerals strength or hardness, Brucite has Mohs Hardness between 2.5-3 while Hematite has a hardness of 6.5.

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