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Dinâmica Externa da Terra
As paisagens
geológicas
e os minerais
ual é o mineral?
Q
Pág.
7
Pág.
21
Qual é o mineral?
Manual e Caderno de Laboratório
Qual é o mineral?
Objetivo
• Identificar minerais através das suas
propriedades.
Qual é o mineral?
Manusear
com cuidado.
Limpar a
amostra com
papel
absorvente
após o teste.
minerais
escala de Mohs
placa de
porcelana
ácido clorídrico
(10%)
Material
Utilizar do
mais duro
para o menos
duro.
Guardar os
minerais na
posição
correta.
Qual é o mineral?
1
Brilho metálico
Brilho não metálico
Pirite
2
2
Faz efervescência com ácidos
Não faz efervescência com ácidos
Calcite
3
3
Dureza < 3
Dureza > 3
4
5
4
Traço cinzento
Traço branco
Biotite
Moscovite
5
Dureza = 6
Dureza > 6
Feldspato
6
6
Cor verde-azeitona ou castanha
Cor branca ou levemente colorida
Olivina
Quartzo
Procedimento
Qual é o mineral?
Amostra Brilho
Efervescência
com ácido
Dureza Traço Cor
Nome do
mineral
A
? ? ? ? ? ?
 Metálico
 Não
Metálico
 Sim
 Não
 1 a 10
(escala de
Mohs)
 Cor do
traço na
placa de
porcelana
 Cor
observável
na
amostra
 Resultado
(chave de
identificação)
Resultados
Qual é o mineral?
Brilho metálico
Pirite
Efervescência com
ácidos
Calcite
1. Indica uma propriedade que, neste conjunto de minerais,
é exclusiva de um único mineral.
Análise dos resultados
Qual é o mineral?
Na mesma coluna existem linhas iguais, ou seja, há
minerais com características iguais para a mesma
propriedade.
2. Fundamenta a seguinte afirmação: “O recurso a uma
única propriedade não é suficiente para identificar alguns
minerais.
Análise dos resultados

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at7_ppt_mineral.pptx

  • 1. Dinâmica Externa da Terra As paisagens geológicas e os minerais ual é o mineral? Q
  • 2. Pág. 7 Pág. 21 Qual é o mineral? Manual e Caderno de Laboratório
  • 3. Qual é o mineral? Objetivo • Identificar minerais através das suas propriedades.
  • 4. Qual é o mineral? Manusear com cuidado. Limpar a amostra com papel absorvente após o teste. minerais escala de Mohs placa de porcelana ácido clorídrico (10%) Material Utilizar do mais duro para o menos duro. Guardar os minerais na posição correta.
  • 5. Qual é o mineral? 1 Brilho metálico Brilho não metálico Pirite 2 2 Faz efervescência com ácidos Não faz efervescência com ácidos Calcite 3 3 Dureza < 3 Dureza > 3 4 5 4 Traço cinzento Traço branco Biotite Moscovite 5 Dureza = 6 Dureza > 6 Feldspato 6 6 Cor verde-azeitona ou castanha Cor branca ou levemente colorida Olivina Quartzo Procedimento
  • 6. Qual é o mineral? Amostra Brilho Efervescência com ácido Dureza Traço Cor Nome do mineral A ? ? ? ? ? ?  Metálico  Não Metálico  Sim  Não  1 a 10 (escala de Mohs)  Cor do traço na placa de porcelana  Cor observável na amostra  Resultado (chave de identificação) Resultados
  • 7. Qual é o mineral? Brilho metálico Pirite Efervescência com ácidos Calcite 1. Indica uma propriedade que, neste conjunto de minerais, é exclusiva de um único mineral. Análise dos resultados
  • 8. Qual é o mineral? Na mesma coluna existem linhas iguais, ou seja, há minerais com características iguais para a mesma propriedade. 2. Fundamenta a seguinte afirmação: “O recurso a uma única propriedade não é suficiente para identificar alguns minerais. Análise dos resultados