Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Quartz from
Morro Velho mine, Nova Lima, Minas Gerais, Brazil


05040030017363769266183.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04750690017271981815027.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04148550017271981859737.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04336400017271981889691.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
05040030017363769266183.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04750690017271981815027.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04148550017271981859737.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04336400017271981889691.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
01741220017367913509255.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04750690017271981815027.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
04148550017271981859737.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
06290900017367913505660.jpg
Quartz, etc.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Comments:Plate 61 from Wilson, Wendell. E.; Bartsch, Joel A.; Mauthner, Mark (2004) Masterpieces of the Mineral World. Houston Museum of Natural Science. [https://www.mindat.org/reference.php?id=18945017]
cit. "The Morro Velho mine is the source of what many belive to be most attractive quartz crystal found in Brazil"
Quality for species:Good crystals or rich for species - important (!)
Significance:Classic locality for this mineral (see references.)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Siderite57
Pyrrhotite50
Dolomite42
Cubanite19
Calcite6
Scheelite4
Native Gold2
Arsenopyrite2
Albite2
Ullmannite1
Fluorapatite1
Chalcopyrite1
Chlorite Group1
Apatite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Morro Velho mine, Nova Lima, Minas Gerais, Brazil
Photo GalleryView Gallery (15 photos)
Data Identifiers
Mindat Occurrence Record ID:38391
Long-form Identifier:1:3:38391:2
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.2km (0.1 miles) ⓘRaposos mine, Raposos, Minas Gerais, Brazil
5.1km (3.2 miles) ⓘBicalho Au deposit, Nova Lima, Minas Gerais, Brazil
8.3km (5.1 miles) ⓘLamego Au deposit, Sabará, Minas Gerais, Brazil
13.8km (8.6 miles) ⓘCuiabá mine, Sabará, Minas Gerais, Brazil
15.6km (9.7 miles) ⓘJuca Vieira mine, Caeté, Minas Gerais, Brazil
18.8km (11.7 miles) ⓘCapão Xavier mine, Nova Lima, Minas Gerais, Brazil
20.5km (12.7 miles) ⓘRoça Grande mine, Caeté, Minas Gerais, Brazil
23.1km (14.4 miles) ⓘGongo Soco mine, Barão de Cocais, Minas Gerais, Brazil
27.6km (17.2 miles) ⓘPico mine, Itabirito, Minas Gerais, Brazil
27.9km (17.3 miles) ⓘCata Branca Mine, Cata Branca–Corrente goldfield, Itabirito, Minas Gerais, Brazil
References
Rocks & Min.: 63:43.
Henwood, W. J. (1871) Observations on Metalliferous Deposits: On the Gold Mines of Minas Geraes, in Brazil. Transactions of the Royal Geological Society of Cornwall, 8 (1) 168-370
Lobato, Lydia Maria, Ribeiro-Rodrigues, Luiz Cláudio, Vieira, Frederico Wallace Reis (2001) Brazil's premier gold province. Part II: geology and genesis of gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero. Mineralium Deposita, 36 (3) 249-277 doi:10.1007/s001260100180
Wilson, Wendell. E.; Bartsch, Joel A.; Mauthner, Mark (2004) Masterpieces of the Mineral World. Houston Museum of Natural Science.pp.154-155
Vial, Diogenes Scipioni; DeWitt, Ed; Lobato, Lydia Maria; Thorman, Charles H. (2007) The geology of the Morro Velho gold deposit in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3). doi:10.1016/j.oregeorev.2004.12.008
 
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